Wonder Woman recognizes that the Beastiamorphs overrunning the island of Valdonia are creations of her old enemy, Circe, so she sets out to deal with the threat; but she finds that the petulant king wants Superman, Circe has disguised herself, and the only clue is a strange, pea-sized stone hidden under a tower of mattresses on Wonder Woman's bed--and she has to untangle Circe's spell, defeat the sorceress, and prove to the king that she is a real hero.