Enthusiastic Vaiana is destined to one day become the chief of the island of Motonui. When the villagers can't catch any fish and all the crops fail, Vaiana discovers that the demigod Maui caused the misfortune after stealing the heart of the goddess Te Fiti. The only way to save the fate of the island is to go into the ocean and find Maui to return Te Fiti's heart. Vaiana, together with her inseparable companion Heihei, will set out on a journey to save her village, advised by her beloved and wise grandmother Tala, always connected to her and the ocean.