Gilbert and Sullivan's classic musical comedy of mistaken identity comes swashbuckling to the screen with all the laughs, songs, and stars that made it a long-running Broadway smash. This spectacular production adds some contemporary flash to the classic farce which follows the adventures of a roguish pirate leader and his young charge through numerous love affairs and sword battles.

A lowly stable boy, Westley, pledges his love to the beautiful Buttercup, only to be abducted and reportedly killed by pirates while Buttercup is betrothed to the evil Prince Humperdinck. Even as Buttercup herself is kidnapped by a giant, a scheming criminal mastermind, and a master Spanish swordsman, a mysterious masked pirate (could it be Westley?) follows in pursuit.

When pirate Burger Beard steals the secret recipe for the beloved Krabby Patties, SpongeBob and friends come ashore to bring back the missing formula. To succeed, they must team up with former rival, Plankton, but soon realize that to defeat a super-villain, they must unleash their inner superheroes.

The gang's headed to a haunted bayou island to investigate the ghost of Moonscar the pirate. But the swashbuckler's spirit isn't the only creepy character on the island.