Germany's Meike von Bismarck is rich, famous, and the top-ranked amateur female tennis player in the world. She seems to have it all, but the Nazis want more. Can Meike deliver the victories Adolf Hitler requires on court while keeping her soul intact off it?

Brash American Helen Wheeler has reached the upper echelons of women's tennis, but her fiery temper and headline-grabbing social life have prevented her from being accepted by the genteel sport's fans. When a shadowy government agent presents Helen with compromising photographs of her with Meike von Bismarck, her one-time doubles partner and former lover, will Helen allow her career to be derailed by an inevitable morals charge or will she agree to spy on the woman she once loved?