During a fierce battle against Hades in the Underworld, the 12 Gold Saints sacrifice themselves to shatter the Wailing Wall, aiding Seiya and his comrades in their journey. Unexpectedly, Aioria and the supposedly fallen Gold Saints find themselves revived in a vibrant world bathed in light. As the enigma of their resurrection lingers, Aioria is thrust into a fresh conflict where a remarkable transformation befalls the Leo Cloth as his Cosmo transcends its boundaries.