Shortly after the destruction of the Wall of Grief, Aiolia is suddenly revived in a snowy land, remembering everything that happened as the Gold Saints sacrificed themselves. Recovering in a prison, he meets Lyfia who informs him that he is in Asgard. A maid serving Hilda, Lyfia is rebelling against the rule of Andreas Lise who has become the new representative after Hilda who has fallen under an illness. Lyfia informs him that Andreas is manipulating the people of Asgard and that Hilda entrusted her to stop Andreas.

At first refusing to aid Lyfia due to his own battle against Hades along his companions, Aiolia returns to aid Lyfia as the Asgardian soldiers ambush her. Donning his Leo Cloth, Aiolia duels the God Warrior Gullinbursti Frodhi armed with the Sieg Schwert which easily deflects Aiolia's attack. Standing up, he notices a strange mark on his body, which Frodhi points out that it is a mark belonging to deceased warriors known as Einherjar according to Asgardian legends. Aiolia is unable to rival him due to Yggdrasil increasing the God Warrior's power. Seeming defeated, Aiolia hears Aiolos' voice which encourage him to find out why the Gold Saints have revived and in Asgard.

Leaving Aiolia to rest after his battle, Lyfia ventures out to find water or food, eventually falling unconscious in the snow. As she recovers in an empty village, she meets a young boy who gives her something to drink. Shortly after, Mu arrives and informs her that he arrived a few days ago in the village which seemed like everyone had disappeared. Discussing a God Warrior with a dragon-shaped God Robe known as Nidhogg Fafner, Mu asks Lyfia to remain in the village and recover while he dealt with Fafner. Mu ambushes the God Warrior and is easily defeated by his whip before being taken for experimenting by Fafner who binds him to the roots of Yggdrasil. Realizing that Yggdrasil is the source of evil, Mu easily breaks free from the roots and retaliates against Fafner before regrouping with Aiolia and Lyfia, with Fafner escaping.

Meanwhile, at an arena, Aldebaran witnesses Dohko fighting several Asgardian soldiers for sport. As they rendezvous at a bar, the Gold Saints discuss their revival in Asgard and that someone is playing with their lives. Before they have time for further talk, the God Warrior Tanngrisnir Heracles confronts them and challenge them. Leaving him to Aldebaran due to his previous loss during the last battle between Athena's Saints and Asgard, Dohko watches from the tribune as Aldebaran dons his Taurus Cloth. As Heracles attacks Aldebaran, the Gold Saint does not make a move which infuriates the God Warrior. Launching an attack at the civilians instead, Aldebaran moves in the way and deflects the attack. Remembering that he would usually leave the thinking part to his other comrades, Aldebaran burns his Cosmo and regrows his broken horn much to Dohko's surprise, overpowering Heracles for a brief moment before he retreats.

Aiolia and Lyfia head towards the village of Asgard while splitting up with Mu. Arriving in the village, they encounter Deathmask who previously encountered Aphrodite and later hanging out at a bar. Pleading with the Cancer Gold Saint, Lyfia is simply rejected as Deathmask is satisfied with his new life, accepting it as a bonus for their sacrifice in the Underworld, leaving the rest for Athena, Seiya and the Bronze Saints they sacrificed their lives for. Seemingly challenging Deathmask, Aiolia simply leaves with Lyfia, deciding to find a place to rest for the upcoming night.

Saga arrives to assist Milo against Camus, Surtr and Sigmund who are all astonished at seeing the strongest Gold Saint. Pulverizing the base with his Galaxian Explosion, the two God Warriors and Camus are unharmed due to Yggdrasil protecting them. As they gather their techniques, Saga transports himself and Milo away with the Another Dimension. They later discuss Yggdrasil, before Milo presses onward determined to destroy Yggdrasil.

At the same time, Aiolia and Lyfia discuss the God Warriors and Andreas as they are unable to sleep. Lyfia reveals each of the God Warriors and who they are.

Meanwhile, Deathmask starts noticing lesser villagers around at the bar or in the village, wondering what's going on. As he later stares at his Cloth, Aphrodite arrives informing him that Aiolia left early. Travelling to the market, Deathmask is shocked to see Helena's flower shop not having opened yet, asking the old man what's happened. Rushing to her house to search for her, he instead meets her brothers and sisters who tell the Gold Saint she has been taken to a hospital for treatment. As he remembers something the owner of the bar told him earlier, Deathmask rushes to this hospital.

At the hospital, God Warrior Fafner, who has been doing research to create something special for Andreas, is confronted by Aphrodite who is successful in extracting information on how to break the barrier of Yggdrasil before being confronted by Andreas himself. Rushing out with Helena, Aphrodite urges Deathmask to run away as he arrives and grabs Helena, shortly before the Pisces Saint is impaled by the roots of Yggdrasil. Deathmask, furious at Andreas for his actions, swears to kill him even without his Cloth. Just then, his Cancer Gold Cloth once more wraps itself around Deathmask who engages the representative in unequal combat. Lamenting that he wished to help Helena but was unable to do anything, he burns his Cosmo to the maximum. He briefly overpowers Andreas as his Cloth changes form, causing Andreas to retreat for the time. As Deathmask cradles Helena, he laments as she dies.

Mu and Shaka converse about the God Cloths, the hidden power that resides in their Cloths. Receiving the golden dagger Athena once claimed her life with, Mu ventures to aid the other Gold Saints who travel to find the Great Roots of Yggdrasil in order to destroy them.

Aiolia and Lyfia find themselves confronted by a cloaked figure revealing himself as Pegasus Seiya. As he questions Seiya why the Bronze Saints are not in Elysium, he starts to believe that they have fallen as well and that Athena has already fallen. Lyfia informs him of the Fimbulwinter, a labyrinth which uses the darkest memories of the Gold Saints to use against them. Aiolia then swears to make Andreas pay for using Seiya and his friends against them. Reluctantly preparing to strike, the "Seiya" illusion suddenly changes to "Shura" instead.

At the same time, Milo interrupts Mu as he finds himself confronted by a cloaked figure. Engaging his opponent, his 15 star points is frozen and he turns to witness that it is Cygnus Hyoga. Shocked at why he's in Asgard, he later realizes that it is an illusion feeding on his darkness. Engaging the "Hyoga" illusion, Milo successfully defeats the illusion before reaching the Great Root.

Meanwhile, Aldebaran and Dohko also find themselves confronted by cloaked figures revealed to be Andromeda Shun and Dragon Shiryu. Asking them why they are not in the underworld fighting Hades, the two Gold Saints manage to see through the illusions and extinguish them before reaching another Great Root.

Caught off guard and trying to persuade himself that Shura only did his duty as a Saint 12 years ago when he killed Aiolos, Aiolia is unable to fight back and almost faces defeat, but the real Shura intervenes and saves Aiolia from a lethal blow before engaging the "Shura" illusion. However, he is unsuccessful in defeating the illusion as Aiolia is the one who created it. Using his Jumping Stone, Shura restrains the illusion and urges Aiolia to strike them both. Revealing his side of the story from what happened 12 years ago, he realized that one day he would have to redeem himself for killing the older brother of Aiolia who was still young then. Once again, Aiolia reluctantly burns his Cosmo before striking them both, successfully destroying the illusion and leaving Shura lightly injured. As the fog lifts, they find the third Great Root.

However, in order to achieve the God Cloth, the Gold Saints must increase their Cosmo to their maximum as well as have a Cloth blessed by Athena. Aldebaran's Cloth has received Athena's tears, and Aiolia has the keepsake gemstone which belonged to Aiolos and has the blessings of Athena. However, Milo possesses neither a Cloth or artifact blessed by Athena, and is thus unable to get a God Cloth. Reluctantly, Mu teleports the dagger to Milo who, along with Aiolia and Aldebaran, awaken their God Cloths.

Although they successfully destroy the Great Roots, Milo dies and is buried by the roots of Yggdrasil. The other Gold Saints feel his Cosmo disappearing and Mu arrives to see his friend buried, lamenting at the loss of his friend.

Aiolia, Aldebaran and Milo have successfully destroyed the Great Root barrier surrounding Yggdrasil and no longer have their Cosmo drained, although at the cost of Milo's life. Entering Yggdrasil while Andreas orders the soldiers to stand aside, The Gold Saints reunite at the center of Yggdrasil, where Lyfia remembers something she once read. Realizing that unless the statues in the 7 chambers of Yggdrasil are destroyed, they are unable to destroy the tree.

Before the God Warriors leave to battle the Gold Saints, Andreas bestows upon them new Odin Sapphires with a significantly greater power which should leave the Gold Saints' God Cloths useless. According to him, the Gold Saints have been revived by Hades who's fighting Athena, naming the battle Ragnarok. As they leave, Frodhi asks Andreas about one Gold Saint who has yet to reveal himself. This leads to a flashback showing that Sagittarius Aiolos once confronted Andreas shortly after his revival in Asgard.

Splitting up, each of the Gold Saints head for a chamber; Aiolia is challenged by Frodhi at Vanaheim, Aldebaran meets Heracles again at Jotunheim, Mu confronts Fafner at Svartalfheim, Shura challenge Camus at Jaheim and Dohko finds himself confronted by dozens of dead warriors in Helheim, with Shaka, Saga and Deathmask making their way to Yggdrasil as well.

Aiolia and Frodhi are seemingly equal as they clash in Vanaheim until Aiolia unleash his full power, taking the God Warrior by surprise. This, however, causes Frodhi to burn his Cosmo more intense as his eyes start to glow purple.

In Jotunheim, Heracles taunts Aldebaran in order to make him use the God Cloth against him again, but Aldebaran refuses as he does not need the God Cloth against an opponent he has already beaten once before, not retaliating at all. He later decides to retaliate as he notice how Heracles has allowed the new Odin Sapphire to consume his soul, shattering his God Robe by using his God Cloth. However, they both die as the roots of Yggdrasil buries them, but not before Aldebaran successfully destroys the statue of Jotunheim.

In Svartalfheim, Mu knocks Fafner to the ground and swears to deal with him once he has destroyed the statue, but the God Warrior stands up with a much more powerful Cosmo and lashes out at the Gold Saint.

In Jaheim, Shura and Camus' attacks clash at an equal level of strength. Remembering the time where they and Saga served Hades to save Athena, they accept that they have chosen separate paths and burn their Cosmo, both awakening a portion of their God Cloths. Clashing once more, they are both wounded but the statue in Jaheim successfully breaks.

At Helheim, Dohko easily wipes out the dead soldiers before attempting to attack the cloaked figure, only for his attack to be neutralized. Just then, Utgardar introduces himself to Dohko and prepares to face him while the cloaked figure is revealed to be Lyfia who seems to be in some sort of trance.

Back at Jaheim, Surtr appears and kills Shura while the hidden statue of Muspelheim emerges from the ground. Camus, having finally awoken his soul again, betrays Surtr by reminding his former friend of the accident when they were young. Enraged, Surtr charge and easily overpowers Camus with his Sword of Flame now burning with a cold blue flame. As he prepares to deal the final blow, Camus reluctantely raises his arms and performs the Aurora Execution as his own Cloth evolve into a God Cloth, granting him victory as Surtr's God Robe is shattered. As they die, Surtr laments at his actions, to which Camus replies that he may finally rest now.

Shaka and Baldr engage in a violent battle in the chamber of light, Alfheim. Attempting to end the God Warrior's life by sending him to one of the 6 realms, he is shocked as Baldr reveals his godly power bestowed to him by the mighty Lord Odin. Easily evading Shaka's technique, Baldr gains the upper hand as a man considered closest to the gods have no chance against him. He proceeds to reveal his background story where he struggled to take care of everyone in a village where everyone had fallen ill. However, in spite of his struggling and due to being young and feeble, everyone died. After conversing with Odin, Baldr was given the power to be untouched by anyone, but at the same time losing something important to him, which cost him the life of his dog and caused him to kill a large amount of Asgardian soldiers in the arena. However, Shaka scolds the God Warrior and states he is not a god, as he does not show any mercy.

In Svartalfheim, Mu is struggling to rival Fafner's new and savage power due to his new Odin Sapphire. However, before they can continue their battle, Deathmask arrives and sends himself and the God Warrior to the Yomotsu Hirasaka, sending Mu ahead while he settles the score. Engaging Fafner, Deathmask is easily overpowered as Fafner's Odin Sapphire grants him greater powers by absorbing the power of the dead. As he demands to be returned to the living world, Deathmask is urged by Helena's brothers and sisters and he burns his Cosmo to a new level.

At Helheim, Dohko easily disposes of the dead soldiers sent at him, only to be blocked by Utgardar as he questions Lyfia.

Opening his eyes, Shaka's Cloth evolves into a God Cloth and he manages to defeat Baldr who realizes that the one thing he lost when he attained godhood was mercy. He states that gods must always care about the suffering of other people, and as Baldr's godhood disappears, his body suffers all the pain and suffering he has gone through without caring. However, Shaka disables his sense of pain, allowing Baldr to die in peace.

Back in Yomotsu Hirasaka, Deathmask awakens his God Cloth and easily overpowers Fafner, shattering his God Robe with his newly developed technique "Sekishiki Meikyu Ha", which grounds Fafner to the ground to be stomped upon by the dead, stating that he is not worthy of neither life or death. Dooming the God Warrior to eternal suffering, Deathmask returns to the world of the living, but collapses to exhaustion.

Saga and Sigmund fight a vicious battle at the chamber of mist, Niflheim. Revealing how he was the first to witness Hilda's change and unable to save her, his little brother became a God Warrior instead. Hearing from Andreas, a doctor at that time, the God Warriors were battling Athena's Saints and Siegfried died during that battle. Saga responds by saying he once had a brother too and know how it must feel losing a little brother. Attacking the God Warrior with his unimaginable strength, Saga inflicts severe damage on the God Robe before a part of Siegfried's God Robe covers him, surprising them both.

Meanwhile, Dohko and Utgardar clash in Helheim and Dohko easily overpowers the God Warrior. However, as he hits the statue of death, his mask loosens and he reveals a similar mark of death like the Gold Saints, although slightly different. As Dohko questions that mark, the statue break despite the low impact from Utgardar; Dohko quickly asks if Utgardar intended for him to destroy it before the chamber collapses.

In Vanaheim, Aiolia and Frodhi's powers constantly clash at equal level, and Frodhi removes his cape and sword before attacking with his lightspeed fists. However, Aiolia easily counters his blows as his own fists are the fangs of the golden lion. Lyfia suddenly enters Vanaheim as well, informing Aiolia of something she realized earlier: The one who truly revived the Gold Saints and brought them back to life is in fact her!

Sigmund is surprised and believes Siegfried has decided to lend his power to his older brother, to which Saga replies that the God Robe is crying, shocking Sigmund. Realizing that Siegfried forgives him for the past, Sigmund is ready to stop the battle. However, Andreas manipulates Sigmund's Odin Sapphire and causes him to go completely berserk against Saga, overwhelming the Gold Saint slightly. Urged by Sigmund to not let him suffer any more humiliation, Saga burns his Cosmo to the maximum limit and awakens his own God Cloth, before dealing a lethal blow against Sigmund. After their battle, Sigmund is still alive. Saga leaves towards his next battle.

While Aiolia reaches Andreas' chambers and confronts him with his God Cloth, Frodhi and Utgardar continue to battle each other. Utgardar states that Frodhi has not enough resolve to protect Asgard as him, until Frodhi is sent flying outside a window and hearing the voice of the real Asgard which is suffering under Andreas' rule. Frodhi regains his strength and rejoins the fight, defeating Utgardar while destroying the final statue, and learning, much to his surprise, that his opponent bears the same Einherjar mark as the Gold Saints.

Meanwhile, despite using all his strength, Aiolia fails to defeat Andreas, but rejoices upon knowing that all the statues were destroyed. However, Andreas shows him the Cloths of the fallen Gold Saints, including Aiolos', revealing that the Sagittarius' Cloth was the first one he obtained. He also reveals that his true objective is to nurture the fruit of Yggdrasil using the Gold Cloths' power, and because of that he manipulated Lyfia into reviving the Gold Saints. Before he could attack the exhausted Leo Saint, Dohko, Mu and Saga appear to fight Andreas as well.

The three Gold Saints hold back Andreas, taking advantage of a wound he suffered during his fight with Aiolos, but their enemy is then possessed by a god who easily overpowers them, until Shaka appears to join the fight as well. Revealing that the one behind Andreas' actions is no other than the Evil God Loki, Shaka uses his most powerful attack against him. Loki easily breaks through Shaka's offensive and restrains him as well, just to later realize that the Virgo Saint was just buying time for Dohko, Saga and Mu to evolve their Cloths into God Cloths and combine their Cosmo to strike the enemy with Athena's Exclamation, which destroys Yggdrasil completely, killing Andreas as well.

Guided back to the surface by Lyfia's spirit, Aiolia watches the fruit of Yggdrasill draining the cosmo of the twelve Golden Cloths when a fully resurrected Loki appears before him, incarnated in a spare body he had preparated previously. Despite not having his Cloth, Aiolia attacks Loki, who defends himself effortlessly, until his brother Aiolos appears to assist him. In the occasion, Aiolos reveals that after his clash with Andreas, he was rescued and brought to Hilda, who informed him of Loki's advent and his ultimate objective, which is to obtain Asgard's ultimate weapon, the Spear of Gungnir, from the fruit of Yggdrasil once it is fully ripen.

Loki then summons an army of Einherjar to fight by his side which are easily defeated by the brothers, but Hilda's room is also stormed by some Einherjar when Sigmund appear to protect her as well. Meanwhile, Frodhi arrives at the Shrine of Odin carrying Odin's Robe when Lyfia appears before him as well. While Aiolia and Aiolos make a retreat, Aiolos realizes that the Draupnir, a weapon Hilda entrusted to him to seal Loki once again is resonating with Aiolia, thus recognizing his younger brother as its rightful wielder.

Wearing the Draupnir and Balmung Sword while clad in Odin's God Robe, Aiolia charges at Loki and gains the upper hand with his speed having increased. However, Aiolia does not have much time as the fruit hiding the Spear of Gungnir is about to ripen. Delivering several blows against the false god, Aiolia swears to take him down while Lyfia prays in order to bestow Odin's powers on the Gold Saint. However, she has not been Odin's representative for very long and finds herself weakening quickly.

While Frodhi defends Lyfia from the Einherjar, Aiolia and Loki's vicious battle resumes until the fruit finally opens and reveal the Spear of Gungnir. Relieved to see the weapon finally uncovered, Loki's happiness is quickly turned into horror as Aiolia delivers a fatal blow that sends him falling down on the spear which impales him.

Believing victory to have been achieved, Aiolia and Aiolos are shocked to see Loki emerging from the spear, having been recognized as its true master. The god then proceeds to deliver one crushing impact towards the two Gold Saints which shatters the Odin Robe in the process.

With nothing to stop him, Loki finds Lyfia who has lost her strength bestowed by Odin and now prays. Blasting away Sigmund and Frodhi who attempt to defend her, Loki is shocked as his attack misses Lyfia by an inch. Hearing a familiar voice, he turns around to see Aiolia and Aiolos in their Gold Cloths again which were revived by Lyfia's prayers. Furious, Loki pursues the two Gold Saints and attempts to shoot a blast at Aiolia, but the attack instead is neutralized. Wondering what just happened, Loki suffers several other attacks until he notice his spear is resonating with something.

The final battle finally commences between Loki and the 12 Gold Saints, who charge in groups of two at the false god but fail to even scratch him. Raising the Spear of Gungnir, Loki easily knocks all 12 Gold Saints to the ground, but they survive due to Mu, Dohko, Camus and Shaka's defenses. Attempting to have Aiolia and the Gold Saints serving him, Loki suddenly notices flower petals covered in blood pouring down on the battlefield. The Gold Saints realise that Athena is using her blood absorbed from the amphora where Hades trapped her and has sent it to them, urging them to stand up once more.

Tearful that their goddess willingly gave away her own blood for their sake, all 12 Gold Saints burn their Cosmo to the maximum limit and awaken their God Cloths which greatly surprises Loki as he finds himself wounded by each attack he suffers. As Hilda describes it, the Gold Cloths have become true God Cloths due to the flower petals Athena sent them, allowing them to unleash their truly divine powers.

Loki attempts to flee the battle as he loses the upper hand, but is pierced by a combined attack from Aiolos and Saga before Aiolia leaps at the false god last, wearing Draupnir given to him by Mu. Unleashing his technique, the two clash violently until Loki begins losing the clash due to Lyfia, Asgard and the entire Earth giving their Cosmo to Aiolia. Feeling Earth's Cosmo flowing inside his body, Aiolia successfully defeats Loki once and for all, sealing him with the Draupnir before his Cloth reverts to normal.

With the enemy vanquished and Asgard rescued, the Gold Saints begin to disappear, realizing that the life Odin had bestowed upon them was about to wear out. Accepting that they must now leave the Earth, they discuss that they would like to give Seiya and his friends the Gold Cloths to aid them. Just then, the god of the seas Poseidon communicates with them, having been briefly awoken by their Cosmo. Promising to send the Gold Cloths to Elysium, the Gold Saints are grateful as they all leave until Aiolia remains.