Aquaman (2018)

Arthur Curry has discovered a great truth about himself. He is the heir to the throne of the kingdom of Atlantis built under the oceans. But Aquaman's sneaky half-brother Orm wants the throne of Atlantis. Arthur Curry, aka Aquaman, must claim his inheritance and take over his people. Otherwise, the people he loves, as well as his own life, will have to face great danger. On this journey, Arthur must not only face himself, but also discover whether he is worthy of being a king.