
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.

To get closer to the secret formula, Plankton swaps bodies with Squidward and must learn to adapt to his new lanky form; Sandy teaches SpongeBob cowboy skills while they pan for bubbles, unaware that Krabs trails them in the hunt.

SpongeBob comes up with a solution when Patrick cannot afford a vacation; Mr. Krabs and SpongeBob win a free cruise, thanks to Plankton.

SpongeBob goes on a search after his favorite pair of underwear goes missing; Baby Prunes shares the story of her days as a child star to explain why she despises chocolate.

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.