There's trouble brewing in Bikini Bottom. Someone has stolen King Neptune's crown, and it looks like Mr. Krab, SpongeBob's boss, is the culprit. Though he's just been passed over for the promotion of his dreams, SpongeBob stands by his boss, and along with his best pal Patrick, sets out on a treacherous mission to Shell City to reclaim the crown and save Mr. Krab's life.

Jack Sparrow, a freewheeling 18th-century pirate, quarrels with a rival pirate bent on pillaging Port Royal. When the governor's daughter is kidnapped, Sparrow decides to help the girl's love save her.