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A shipwreck deposits Hercules (Kevin Sorbo) on the shores of Atlantis. Here he meets the fortune-telling Cassandra (Claudia Black), whose efforts to tell the warmongering King Panthius (James Beaumont) that Atlantis is doomed have fallen upon deaf ears. Both Cassandra and Hercules are thrown into prison, where Hercules discovers that Panthius was not only responsible for destroying his ship, but has enslaved thousands of shipwrecked sailors to mine the crystal necessary for the king's deadly, high-powered cannon. This episode was originally aired as the finale of Hercules: The Legendary Journeys' third season.