The young Bronze Saints are taken by Bear Geki to the Hell Camp, which is full of lethal traps composed of the elements of Cosmo. Those who survive the Camp are elligible to become Silver Saints. Kōga and Sōma must work together to overcome the obstacles, all while Sōma must avoid fellow Saint Argo's hostility and haunting memories of his past.

The Bronze Saints arrive to a desert area, in which they meet a young girl from the people of Jamir, called Raki, who at first attacks them. After realizing they are Saints, by tradition connected to the people of Jamir, Raki takes them through a shortcut to avoid the desert areas, only to be greeted by the challenge of Kerberos Dorie, who seeks to capture Aria. Managing to defeat Dorie after a difficult battle, the Bronze Saints resume their journey, bidding farewell to their young benefactor, who later is joined by her mentor, Appendix Kiki, the former apprentice of the legendary Aries Mu, now a young man, who realizes the Bronze Saints are the new embodiment of hope in this era.

The episode is just a summary of all the events that have happened thus far from Koga's birth to Aria's death at the hands of Mar's

Upon arriving at the next temple, Haruto and Souma are confronted by Virgo Fudo, a gold saint whose cosmos surpasses that of all the Gold Saints in the earlier temples. Yuna, Kouga, and Ryuhou join the battle in time to save their friends from a crushing defeat. But even the combined powers of the five Bronze Saints is no match for Fudo. When all hope seems lost, Eden arrive at the last minute and protects them from one of Fudo's techniques.

As Earth's Cosmo is transferred to planet Mars, Medea drains the darkness Cosmo from Ludwig's body and transfers it to Amor, before she departs to Mars. After revealing all the suffering and prejudice he has suffered along with his sister during his childhood, Amor attacks Kouga. Eden joins Kouga against him, but when Amor transfers the battlefield to Mars, where his powers are increased to the same level as Mars possessed, Kouga finds on it an opportunity to retrieve Aria's staff and stop Earth's destruction.

The Steel Saints training facility is stormed by the Pallasites led by Hati. Koga and Subaru arrive soon after and they learn that the residents had previously evacuated with former Bronze Saints Ban and Nachi. While investigating, Koga learns about Subaru's origins from his fellow Steel Saint Erna, and it is revealed that among the Steel Saints, Subaru has the strongest Cosmo, and that one day he may find his own Guardian Constelation and become a proper Saint.

As the Saints mourn Genbu's death, Hati appears to resume the assault on the Palaestra until Seiya and Athena appear to drive the enemies away. Having finally decided to confront her sister, Saori takes advantage of the curse placed on her to find out where Pallas is hiding.

The second day of battles begin, and Koga, Ryuhou, Haruto, and Subaru take a chance to make a beeline for the Palace until they are intercepted by Mira, a Pallasite of unknown rank who fights without donning his Chronotector. Despite seemingly at a disadvantage, Mira easily overpowers the party with his speed and his Alchemy Glove's mysterious power to destroy Saint Cloths just by touching them, until Haruto realizes his trick and comes up with a way to fight back, but Mira is barely scathed by the counter. Just as he is about to don his Chronotector, he is ...

Raki arrives at the city surrounding Pallasvelda to assist the others with a delivery of Cloth-restoring Stardust Sand but is attacked by the Pallasite Halimede, armed with a new triple rod. Koga and Subaru appear to protect her, but while Koga's cloth is too damaged, Subaru's suddenly stops moving out of grief for all the Saints who died wearing it. Eventually, he manages to help Equuleus overcome its sorrow and he defeats Halimede with a Pleiades Tempest. Meanwhile, Saori awakens and retrieves the Cloth of Athena to join the battle as well, accompanied by Kiki, Fudo...

Koga, Yuna, and Souma advance through the first path while Shun stays behind to deal with the enemy reinforcements. However, the Secondary Pallasite Surtr blocks their path enveloped in a defensive barrier that seems impenetrable, until Shun catches up with them and realizes the secret behind the enemy's trick.

The young Bronze Saints face off against Gallia on their own, allowing the Gold Saints and Athena to move forward towards Pallas. Although Gallia's Photontector and Bushin Photon Sword seem impervious to harm, Subaru once more calls on the mysterious powerful cosmo to break through Gallia's offensive and actually damage the sword, convincing the others to call upon their own cosmo, transforming their New Cloths into the more powerful Omega Cloths, and together the six Bronze Saints defeat Gallia.

Accompained only by Seiya and Harbinger, Saori finally comes face to face with Pallas. Titan steps in to protect his master and Harbinger challenges the Pallasite, using Athena's cloth to draw his attention. Treating him as a mere ruffian, Titan is surprised by the true might of the Taurus Saint, who proves himself far more powerful and noble than he claims to be.