Several years before the adventures of Seiya and the Bronze Saints, the young Leo Aiolia already serves the Sanctuary as one of the twelve Gold Saints. Burdened by the supposed betrayal of his brother Aiolos, he is still trying to earn the trust of his peers when an ancient threat resurfaces. The Titans, led by Cronus, seek to reclaim their power and revive a forgotten conflict between the gods and Athena’s protectors. Aiolia and the other Gold Saints soon find themselves on the front line against enemies capable of matching their strength. The series explores their youth, their relationships, and the battles that shaped the generation preceding Seiya’s.