The book begins with Plankton hiding behind a stack of cans, only to be found by SpongeBob. SpongeBob then warns Plankton that he cannot spy inside of the Krusty Krab. He then warns him that he cannot dine on a Krabby Patty, not a single bite. He concludes the book by saying that the secret formula is safe with him there.
SpongeBob is seen holding a magnifying glass on Plankton as he is smiling because he knows that Plankton is attempting to steal a Krabby Patty.