When SpongeBob tries to find out why he stepped in gum, he role-plays as a detective called GumShoe SquarePants.
Done in the style of the old classic black-and-white horror films, it all begin when SpongeBob wondering why he's called GumShoe SquarePants, then he step on a gum, thus realizing why he is called that way. He inspects it, and chews it. After that, he steps on Plankton. SpongeBob doesn't wanted to be called PlanktonShoe SquarePants. Realizing he doesn't want to be labled that, decides to get rid of Plankton, then he walks solving a mystery, he claim that he's have another mystery: where is he right now.