Victor, the ghost, is desperate to get off dreary Black Hall Island, so he steals a ride on an unsuspecting tourist boat back to Bywater-by-Sea. Two other ghosts - the terribly vain Flora Rose and the lonely but friendly Billy - know he is up to no good, so they follow him. While Tom is distracted, trying to stop a corporation from building a theme park over his Field Craft hut, Victor sees his opportunity to take over the world.

Victor, the ghost, is desperate to get off dreary Black Hall Island, so he steals a ride on an unsuspecting tourist boat back to Bywater-by-Sea. Two other ghosts - the terribly vain Flora Rose and the lonely but friendly Billy - know he is up to no good, so they follow him. While Tom is distracted, trying to stop a corporation from building a theme park over his Field Craft hut, Victor sees his opportunity to take over the world.