Two explorers called Tom and Jerry go underground, where they meet a descendant of the lost continent of Lemuria and get taken to an underground city called Talos.
Two explorers called Jack and Jill enter a very deep cavern system, where they meet a descendant of Atlantis and get taken to a crystal city called Posid.
Twenty three sailors go to sea onboard a ship called THE SEA DRAGON. Everything goes well at first, but the weather changes and a terrible storm comes. Can things get worse than a devastating storm?