
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.
Mr. Krabs becomes obsessed when he thinks that SpongeBob has found a penny; SpongeBob tries to memorize the history of boating in one night.
Squidward's new life is threatened; stuck in her dome, Sandy suspects Plankton's up to no good and gets Patrick to investigate.
Plankton builds a coliseum and holds a gladiator show; SpongeBob and Patrick keep Squidward from concentrating on his music.
SpongeBob must go to extreme lengths when Gary refuses to go to the vet; SpongeBob gets stuck while working out.