When Flinn and crew (the goodest goodies) hear a wailing and a sobbing coming from the sea they find a pirate in distress. His name is Captain Gurgleguts, and the pirate dinosaurs have stolen all his treasure. He's very afraid that he'll be in big trouble with his mummy. They set sail of Bag O' Bones Island, the home of those rotten rascals, and follow a trail of (stolen) gold doubloons up the beach and into the jungle. But before they know it Gurgleguts as been 'hornswaggled' himself and the pirate dinosaurs have him tied to a spit, preparing to roast him and eat him for lunch - with ketchup. Brave Captain Flinn immediately confronts them and demands they release Gurgleguts and return his stolen treasure. A swashbuckle ensues, but when Flinn's side is winning, Captain T Rex calls on his cousin, Gigantosaurus, the biggest dinosaur in the Seven-and-a-half seas.