
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.

Squidward's new life is threatened; stuck in her dome, Sandy suspects Plankton's up to no good and gets Patrick to investigate.

When the Krusty Krab runs out of mustard, Mr. Krabs sends SpongeBob, Patrick and Squidward to dig up some more; SpongeBob and Sandy have to collect Krabby Patty ingredients, but Plankton follows their every step.

SpongeBob must take a day off from work; SpongeBob finds an old wig in the trash and wears it around town.

SpongeBob and Patrick learn the secret origins of Mermaid Man and Barnacle Boy; Plankton grows a second eye and becomes nice.