The plot of "The SpongeBob SquarePants Movie" involves SpongeBob SquarePants, and his friend, Patrick Star, attempting to retrieve King Neptune's crown. SpongeBob and Patrick run into many comical difficulties along the way in this 2004 movie.
"The SpongeBob SquarePants Movie" begins with SpongeBob SquarePants working as a fry cook at the Krusty Krab restaurant. SpongeBob is expecting a promotion, but he is passed over for the position in favor of his friend and co-worker, Squidward Tentacles. The owner of the Krusty Krab, Mr. Krabs, tells SpongeBob he made the decision because Squidward is "more mature." The next day, King Neptune enters the Krusty Krab and threatens to kill Mr. Krabs for stealing his crown. Though Mr. Krabs has been framed, SpongeBob promises to return King Neptune's crown, and sets off on a journey to retrieve it with Patrick Star.
SpongeBob and Patrick encounter a dangerous trench, but traverse it with help from King Neptune's daughter, Mindy. However, SpongeBob and Patrick are soon captured by a scuba diver, who places them in his store of sea-related collectibles. SpongeBob and Patrick find King Neptune's crown in the diver's store, and manage to escape after stealing it. SpongeBob returns King Neptune's crown to the Krusty Krab just in time to save Mr. Krabs. King Neptune praises SpongeBob for his efforts, and Mr. Krabs shows his gratitude by making SpongeBob the manager of the Krusty Krab 2, a brand new restaurant.