The Saints are on a camping trip nicknamed “Hell Camp”. Their goal is to reach the Cosmo Delta before deadline. Those who make it get a chance to participate in the Saint Fight, with the winner being promoted to a Silver Saint. With such high stakes, not everybody is going to play by the rules.

While attempting to leave the Palaestra, Koga is stopped by an unknown student. The next morning the students cheer as Riyuho, the wearer of the Dragon cloth has returned. Riyuho is adored by students and faculty alike, but there is a tension between him and Koga.

Private fights between Saints are prohibited, one of the many old rules that Koga does not agree with it. His new way of thinking is spreading among the Saints at the Palaestra.

From the age of myths to the present day, whenever the earth is endangered by evil, the Saints have appeared to save it. Wearing holy armor called "Cloth", they have protected the goddess that rules over this world, Athena. The legends of the Pegasus Seiya, a Saint who saved Athena many times, have been told for generations. Many years have passed, and the God of war, Mars, who was sealed by Seiya, is about to revive. Meanwhile, a boy whose life was saved by Seiya years ago, is being raised by Athena and Saori to become a Saint and fight in the coming battle. When the power within him awakens, a new legend of the Saints begins!

Hakurei uses a powerful attack with the help of his fallen comrades to seal Hypnos. But when he raises his blade again to destroy the barrier, King Hades appears. Tenma and Dohko come to help, but the awakened Hades is simply too powerful. But just when they think it's all over...

Hakurei goes into Hades castle alone, protected by a blade from the last Athena. He tears apart the oppossing Specters until he reaches the center of the barrier that protects Hades Castle. When he attempts to destroy it with his sword, Hypnos appears. Will Hakurei be able to defeat the foe he has hated since the last Holy War?

With the four God's barrier destroyed, Hypnos's "Barrier of Sleep" is lifted, and the forces of the Saints march on Hades castle! Hakurei gives them a rousing speech as Seiji, then enters Hades castle alone to defeat Hypnos. And as Alone paints his Lost Canvas in the depths of the Dream World, Hypnos turns him into the real King Hades...

Tenma and El Cid are helpless before the combined might of Oneiros and the other three Gods. But Athena appears in the dream world to save Sisyphus. Tenma and El Cid begin the fight anew to protect Athena, and succeed in removing Oneiros from the Dream World!

Athena enters Sisyphus's dream. There she finds that Sisyphus torn by guilt over taking her away from Alone and Tenma. He thinks that he ruined her life, and caused the Holy War. Athena risks her life to attempt to persuade him to open his heart and rise from the darkness. But El Cid's Cosmo is finally running out in the attle with Oneiros!

With one of the four gods down, El Cid finds himself confronted by Icelus. Icelus continues to overpower El Cid with his dimensional abilities, but El Cid is determined to rescue Sisyphos.

Nearing Hades's castle, Tenma suddenly finds himself standing before his undamaged village. He can't shake the feeling something is wrong as Alone and Sasha tell him everything has been a dream.

Hypnos gathers the four gods who control dreams. One of them, the Vision Icelus, appears in Sagittarius, avoiding Capricorn El Cid's attacks, and steals the soul of the unconscious Sisyphus. El Cid leaves the Sanctuary alone to get it back. El Cid, who had always been by Sisyphus side, felt the reason why he wouldn't wake up...

Thanatos finally gets serious after being wounded by Manigoldo. But even in the worst position imaginable, Seiji doesn't falter. Don't use the word despair so loosely, he says, and Manigoldo remembers his old days with his master and regains hope. The two use their Sekishiki Meikaiha attack in a final desperate attempt, and succeed in separating Thanatos soul from his body, but...

Manigoldo finds the location of the Twin Gods, but is helpless before the might of Thanatos, the God of Death. The Pope Seiji arrives to help him. As he struggles to withstands Thanatos’s attacks, Manigold remembers how he met Seiji when he was young. Manigoldo, a war orphan, once thought that human life was valueless… As Thanatos finally reveals his true strength, is there any way for them to win?

Tenma, Yato, and Yuzuriha are surrounded by Veronica’s zombies, only to be saved by Cancer Saint Manigoldo. Manigoldo had come to protect Tenma at the pope’s orders. With his overwhelming power, he splits Veronica’s body in two. But even this isn’t enough to kill him, and Veronica tries to cause them all to rot along with the forest. Meanwhile, the Twin Gods Hypnos and Thanatos watch the battle from the palace as they play Chess…