All-Star wants to do a book report on an adventure story and casey reminds him of another book he has to do. All-Star tells Casey that she has no sense of adventure. Then, a pirate ship floats into town and All-Star and Casey try to find out what's going on. The Captain is the Governor's brother and he tells him something about a treasure hunt. And where there's treasure, Big Weed and Little Seaweed get involved, as usual, along with All-Star and Casey. The captain discovers them and he doesn't prosecute them. They hear some great stories about the captain's life on the high seas. The Captain even tells them about a whale that is after him. That night while the captain is asleep, Bigweed, Little Seaweed and Stinky Dan try to steal the treasure map. All-Star and Casey try to stop them, but the Seaweeds and Dan exile them from the ship. Sure enough, the whale comes after All-Star and Casey and they end up inside the whale! Meanwhile, the Seaweeds and Dan try to find the treasure.