The Seal of Orichalcos was an invisible evil. Yugi Muto, Seto Kaiba, Joey Wheeler, and a handful of other people knew all too well about the Seal's power. But the general public had no knowledge of what this Seal was, or the devastation it could cause. But they're about to find out, when the Doma organization returns with a sinister agenda to, once again, resurrect the Great Leviathan.