Moana Waialiki is a sea voyaging enthusiast, and the only daughter of a chief in a long line of navigators in the ancient South Pacific world of Oceania. When her family needs her help she sets off on a voyage to return the powerful heart of Te Fiti to the mother island. Will the legendary demigod Maui help her complete her quest? Along the way they encounter enormous sea creatures, breathtaking underworlds, and ancient folklore.