Duels rage around Battle City as fish monsters, sea serpents, and dark beasts of the underworld are unleashed from their decks! First Jonouchi fights Ryota Kajiki, Duelist of the Sea, on his home turf at the Domino City Aquarium! Then Marik's henchmen, the Rare Hunters, force Kaiba and Yugi into a tag-team duel on top of a skyscraper! Can the two arch-rivals work together...or will they fall to their deaths 13 floors below?!