Captain Jack Sparrow and pirate Hector Barbossa both return to claim the Black Pearl, and find Poseidon's powerful trident. The son of Will Turner, now 17, has vowed to save his father from the sea with the same trident. Carina, an astronomer charged with witchcraft, believes her unknown father's diary has clues to their destination. Everyone cooperates and clashes in the struggle for power and those they love.
