However, as they get near the island, they are suddenly attacked by a gang of pirates. At that moment, the island begins to move, revealing that it is a part of a massive advanced technological ship. The pirates retreat, but abduct Shizuka in the process. Nobita and his friends are unable to rescue her, but save an unconscious boy named Flock. Flock explains that the pirates that attacked them are actually time travelers, who travels to different eras and steal treasures off the sea floor. Flock reveals that he was also part of the ship's crew, but decided to desert since he couldn't accept taking orders from Captain Silver. Doraemon uses the treasure map to track the pirate ship's location.