
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 cleans up Bikini Bottom with SpongeBob's help; SpongeBob gets Gary a pet.
Patrick has a coupon for free ice cream, but he has to get to the store if he wants to use it; Mr. Krabs buys Squidward's art, but to make a profit on his purchase he will have to get the artist out of the picture.
SpongeBob and Patrick must learn to share a toy; SpongeBob and Mr. Krabs go to the Cheapest Crab Convention.
A strange moon turns everyone in town into wild animals, and Sandy is the only one who can save them; Patrick is sleepwalking, and SpongeBob is unable to wake him up.