How is this possible? What is this new wonder? Saga des Gémeaux, alive?! The truth about the past of the late Golden Knight of Gemini is finally revealed in full, with the appearance of his twin animated by evil intentions, the terrible Kanon, now the Dragon of the Seas at the service of Poseidon, whose spirit he manipulates still weakened by his possession of Julian Solo's body to take his revenge on the Sanctuary and on the cruel punishment formerly inflicted by Saga... Faux-semblants, illusions, masks that fall; the Phoenix flies to the aid of his companions in order to defeat their enemy and to save Saori and the Earth before the waters of the Flood cover everything. But in the chaos of the battle, Poseidon's spirit finally awakens freely and the wrathful gods of the oceans unleashes all its power! A duel at the top between two divinities, which depends on the fate of the world and its inhabitants... the Bronze Knights will protect Athena to the peril of their life!