Wonder Woman fights a life-and-death struggle against Hypnota and Serva, who have succeeded in stealing the secret defense plan against Saturn (in case they break the peace signed in Wonder Woman #10), and taking a number of slaves to do their bidding.

When Steve Trevor beings acting strangly, giving top secret documents to a strange woman and then claiming not to remember doing so, Wonder Woman investigates and learns that he has fallen under the hypnotic influence of Hypnota.

The origin of Hypnota and her blue hypnotic ray is revealed when Wonder Woman rescues Serva from Hypnota's influence but Hypnota is not willing to let Serfa go.

Wonder Woman's investigation into an attack upon the Saturnian ambassador reveals that Hypnota has been using her powers to turn people into willing slaves and then selling them to Saturn. Further investigation reveals the truth about Hypnota and Serva.