Thundarr, Princess Ariel, and Ookla battle Vashtarr, an evil wizard who steals the Crystal of Prophecy that can give the details of his downfall. When it shatters in his efforts to retrieve it, the prophecy is foretold as they learn three women will unite to defeat him. Maya, an element-shifter buried in the ruins of the old city of Endorr. Cinda, a hermitic barbarian living in the Canyon of Death whose staff grants her great strength. And Valerie Storm, a fashion model from Old Earth who is abducted and taken prisoner by Vashtarr himself.