
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.

SpongeBob and Patrick go back in time to see the young Mermaid Man and Barnacle Boy; SpongeBob and Patrick watch their heroes fight bad guys.

When the circus comes to town and steals his customers away, Mr. Krabs tries to sabotage the show; Sandy spends the day solving everyone's issues, only to return home to her own monster of a problem.

SpongeBob and Patrick have their peaceful day of jelly fishing disturbed by Sandy's competitive nature; SpongeBob pulls from Squidward's shirt a loose string that never seems to end.

Not knowing the contents of Pat's secret box drives SpongeBob crazy; Squidward lies to an old rival about having a band.