Moana Jr. follows the spirited teenage daughter of a Polynesian chief who is chosen by the ocean to return a mystical stone to the goddess Te Fiti to save her island from a blight. On her quest, she teams up with the once-mighty demigod Maui, and together they navigate the ocean, face monsters, and complete an ancient task. Along the way, Moana learns about her identity, her ancestors, and finds her inner strength.