A vicious storm separates twins Connor and Grace Tempest, destroying their boat and leaving them fighting for their lives in the cruel, cold water. Picked up by one of the more notorious pirate ships, Connor soon finds himself wielding a cutlass. But does he have the stomach to be a pirate? Grace finds herself on a more mysterious ship. Kept under lock and key, she's assured no harm will come to her, just as long as she follows the enigmatic captain's rules...