Come on a crazy ride with the world's favourite sea sponge; SpongeBob SquarePants, and his best friend Patrick the starfish as they try to solve the whodunnit, whereisit 'Krabby Patty recipe' mystery as only two hapless friends can! In the special episode, 'The Great Patty Caper' Mr. Krabs gives SpongeBob the only key to the vault holding the Krabby Patty's secret recipe, and SpongeBob vows to guard it with his life. But as soon as SpongeBob and Patrick board the train to retrieve the recipe, the key is mysteriously missing. Who could have stolen the Key? Was it the sneaky Plankton?