
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 wants to throw a birthday party for Pearl; SpongeBob receives an invitation to take part in a competition.

At night school, SpongeBob and Patrick dive into a series of classes on wildly different subjects; Plankton hires Bubble Bass at the Chum Bucket and realizes he can utilize him to get his hands on a Krabby Patty.

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.

When two halves of an ancient medallion reunite, SpongeBob and his friends find themselves in the city of Atlantis, where the king gives them a tour.