The Marrowbone has been immobilized and Victor MacLimpet is feeling glum: a pirate without a ship is a pirate without a job. Just as he hits rock bottom, Victor gets a very bad idea... He'll wreck a galleon and steal its cargo. Perfect! Except that the "loot" in question will sow discord within the "Pirate Family" and all over Turtle Island...

Turtle Island is in full swing! The pirates are planning a big party to celebrate the centennial of the island's founding hero, the magnificent Max Turtle. Meanwhile, a mysterious character invites himself to stay with the MacLimpets: Grandpa Duff. Victor is less than thrilled by this reunion with a father who has been absent for so many years... What can he be up to now?