Marie, Thomas and Willy, like real pirates, know their way around ships. Therefore, this time they are heading to the ports to see the new ship that is about to land on the shore of their island. However, this is the first time they have seen such a ship, and with so many people on board. Trying to learn more about the arriving ship, the young pirates decide to board. However, the beloved captain of the ship chases them off the ship. A gang of pirates is going to find out what the captain is hiding.