On this week's episode, James, Jarrod, and Kenny explore the deep blue sea and stumble upon the Lost City of Atlantis. With the undersea army of N.E.M.O at his command, Black Manta draws the U.S. and Atlantis into what the Aquaman has been fighting to prevent. Now the sea king races to uncover proof of N.E.M.O.'s deception before the two nations destroy each other.