
A square yellow sponge named SpongeBob SquarePants lives in a pineapple with his pet snail, Gary, in the city of Bikini Bottom on the floor of the Pacific Ocean. He works as a fry cook at the Krusty Krab. During his time off, SpongeBob has a knack for attracting trouble with his starfish best friend, Patrick. Arrogant octopus Squidward Tentacles, SpongeBob's neighbor, dislikes SpongeBob because of his childlike behavior.

Plankton creates a gas that turns everyone at the Krusty Krab into babies; SpongeBob trades places with a French chef from a fancy restaurant.

SpongeBob, Patrick and Squidward buy Mr. Krabs a new mattress; Plankton sues Mr. Krabs after falling at the Krusty Krab.

Mr. Krabs' customers abandon him when SpongeBob starts cooking at home; when Plankton gets kicked out of the house, SpongeBob must teach him how to win his computer wife back.

SpongeBob and Patrick exchange tiny living versions of themselves; Plankton tells his grandma that he owns the Krusty Krab, but must keep the lie going when she comes to visit.