Out at sea, distress signals are sent by a mysterious ship, forcing other vessels to collide and sink. Hiro, Hime, and Riza, board this ship, later haunted with zombies. The three are saved by a werewolf named Keziah Bold. After figuring out that the distress signals are being played on a flute by a mermaid hidden somewhere on the ship, the group finally finds the mermaid Madeleine in a room, cursed for trading her voice for a human body. The ghost shark of the haunted ship used these distress signals to feed on the drowned souls. Keziah sets fire to sink the ship, while the ghost shark chases after the rest, but Hime smashes it with a chandelier, which releases all the souls. When Keziah warns the others to get off the ship, Madeleine calls out for him to save his life, sacrificing her own. However, Emile, Keziah's master and one of Hime's older brothers, shows up and revives Madeleine before the three of them leave the ship.