The episode begins with our heroes walking through the woods as we find they are looking for the Earth Cosmo Core. Haruto appears, informing them that there is a town in front of them and a visitor behind them before he disappears once more, despite them asking him to stay. The "visitor" turns out to be Ichi, the older Saint from Palestra that was never able to use his powers correctly, and since that time the bronze saints found some surprises along the way.

Dragon Ryuhou arrives to the Temple of the Twins, being greeted by a strange, peaceful atmosphere and talking animals. Gemini Paradox, the guardian of the temple, gently welcomes the young Saint and exposes to him her motives for her allegiance to Mars, and reminisces about her past. Disagreeing with Paradox's amoral perspective, Ryuhou engages her in battle, managing to overpower the gentle Paradox. Much to his surprise, she emerges full of hate and with no trace of her previous loving personality. Meanwhile, Aquila Yuna arrives to the Cancer Temple.

Koga arrives at the Gemini Temple. He and Ryuhou join forces in order to defeat Gemini Paradox. Despite their best efforts, the two of them are outclassed by the more experienced warrior, especially when her darker half comes out to fight. Incensed by Paradox's selfish nature, Ryuhou manages to awaken the Seventh Sense and pull out a desperate win at the last minute. Ryuhou and Kouga the head off to the Cancer Temple.

Koga and Subaru are sent by Shina to investigate the disappearance of a Silver Saint. Upon finding their missing companion, they are approached by the Secondary Pallasite Europa and the Tertiary Pallasite Thebe and learn, much to their surprise that Eden is now working with them as a Tertiary Pallasite, with the promise of having Aria and the rest of his family revived. With orders to kill Koga, Eden attacks him mercilessly until Thebe decides to intervene and the Orion Saint reveals his true intentions as well as his new Orion Cloth.

Koga and Subaru return to the Palaestra which is full of refugees from the villages attacked by the Pallasites and rendezvous with their friends. Genbu approaches the Bronze Saints and, noticing how much their cloths are damaged, reprimands them for relying too much on them instead of their own abilities. When a large enemy force led by the secondary Pallasite Aegir surrounds the Palaestra, Genbu decides to face it head on by himself, while taking the opportunity to share with Koga and the others what he has learned from his teacher, the previous Libra Saint.

As the battle intensifies, Souma and Subaru fall back to assist the other Steel Saints in time to rescue only two of them, Kerry and Emma. Soon after, they are attacked by Loge and forced to retreat once Souma is injured. Surrounded by the enemy forces, Souma and the Steel Saints must work together to break Loge's siege and fight back.

To increase his power for his rematch against Yuna and Souma, Methone uses a dreadful item given to him by Europa to kill his sister Ymir and drain her Cosmo, and the two Bronze Saints must combine their strengths against the empowered Pallasite, as they reminisce upon the day they first met.

As Saori and her escorts advance through the city overcoming all opposition, Ryuhou is separated from his fellow Bronze Saints by Paradox, who returns as a Secondary Pallasite for a rematch. Paradox's sister Integra appears to assist him as the new Gemini Gold Saint, while the last of the legendary saints, Phoenix Ikki, prepares himself to join the battle as well.

Tokisada, the former Aquarius Gold Saint who was supposed to be defeated by Haruto at the End of Time, appears before him as a Secondary Pallasite at the second path, donning a Chronotector that enhances his time-control abilities. Haruto, Eden and Subaru have a hard time against him until Hyoga appears to battle him in their place.

After mourning the death of Ikki, Shiryu and Ryuhou have to face off against the Secondary Pallasite Rhea. In the occasion, the Libra Saint takes the opportunity to evaluate how far his son had improved his cosmo.

The long awaited confront between Athena and Pallas begins. Saori tries her best to dissuade Pallas, but her drive to enact revenge on Athena is stronger. However, even while draining her sister's energy and donning the strongest of all Chronotectors, Pallas is defeated by Athena and Titan stands between them to protect her in the last moment. To protect Saori, Seiya, bringing forth the true power of the Sagittarius cloth, steps in to confront the Pallasite.

While Seiya, Kouga, and the other young Bronze Saints travel to face off against Saturn and Shun and Hyoga prepare for battle with Europa and Mira, the Steel Saints must deal with Aegir and his Phantom Arm of Hyperion. All hope seems lost until an old ally returns.