Vincent, a teenage humpback whale, is the son of the famous last whale singer, who protected the ocean and its inhabitants until the very end. When Vincent tragically loses his father and mother, he must take his place and continue as the protector of underwater life with his own magical song. However, he is too frightened, lonely, and uncertain. When the monstrous Leviathan escapes from a melting iceberg and begins to threaten all marine life with its deadly ink, Vincent must find his own song to stop this threat. But he is still crippled by self-doubt and instead embarks on a dangerous journey to the deepest place at the bottom of the ocean to bring his parents back from the mythical Star Pool. His last hope is that his father will finally be able to defeat Leviathan in his place. With the help of his fish buddy Walter the shieldfish and the brave orca Daria, Vincent must overcome his fears, overcome often unexpected obstacles, and learn many secrets of the ocean. Above all, he must find his own song to help him save life in the ocean.