After a dogfight with a Nazi plane, U.S. Air Force Steve Trevor crashlands on an uncharted island in the Bermuda Triangle. Paradise Island is inhabited only by women, and their existence has been kept a secret for thousands of years. Learning of the Nazi threat to humanity, the Amazon princess, Diana, is chosen to accompany Trevor back to the United States to battle the Third Reich. Garbed in a skimpy red, white & blue costume and armed with a magic lasso that forces anyone within its grasp to tell the truth, Diana uses her powers as Wonder Woman to battle the forces ...
A scientist develops a method of making earthquakes. Later a German spy steals his work. Steve tries to find out what he is going to do with it. But they also find out he's infected with bubonic plague.
Top Nazi agent Wotan has two surgically altered doubles replace the man in charge of the Bureau of Printing and Engraving and his girlfriend, a waitress. The plan is to steal the $2 engraving plates and use them to collapse the American economy.
Andros has been kidnapped and taken to Germany. When Wonder Woman attempts to rescue him, Andros tells her he sees little difference between the way the Nazis and the Allied Forces wage war. Maj. Steve Trevor mounts a rescue mission of his own together with British agent Mallory.
When a rancher is dealing with rustlers, he calls his friend General Blankenship for help. So he sends Steve and Diana follows him. They try to find the rustlers and someone close to the rancher is helping them.