The Hall of Justice, with Wonder Woman and Samurai inside, gets swallowed up into the Earth. After tumbling through layers of rock, the Hall of Justices comes to a stop at a strange forgotten world beneath our own. When Wonder Woman and Samurai explore the strange subterranean world, they are attacked by pre-historic creatures called Slarums. Technos saves the two Super Friends and offers to show them the world of the Volti. During the tour Technos gets mad because the two Super Friends asked him why the Volti have not helped the Slarums and as a result, Technos imprisons them. Wonder Woman and Samurai escape and head over to the Hall of Justice to contact the other Super Friends only to be met by Slarums. Wonder Woman, Samurai, and the Slarums decide to pay the Volti a visit to unite the two races and lift the Hall of Justice back to the surface.