|Peter Sellers||Dr. Fritz Fassbender|
|Peter O'Toole||Michael James|
|Romy Schneider||Carole Werner|
|Paula Prentiss||Liz Bien|
|Woody Allen||Victor Skakapopulis|
An irrepressible cad by nature, Michael James is determined to reform and stay faithful to his fiancée, Carole . However, Michael's attempt at fidelity is jeopardized when numerous attractive women become smitten with him, including Liz and Rita . Meanwhile, another of Michael's admirers, Renée, is the object of fixation for his therapist, the wacky Dr. Fritz Fassbender .