Max, a young corporate hotshot, leaves his successful new world behind to search for his elusive lost love Lisa. His mad quest begins after he accidentally overhears Lisa's melodic voice speaking in the phone booth next door. But before he knows it, she is gone. Still, he is so elated that he abandons his plans, lies to his fiancee, and after leaving his luggage with his pal Lucien, sets off to find her. The hunt leads to a fabulous apartment, where he saves a girl from a suicide thinking that she is Lisa. But this girl, Alice is as drab and mousy as Max's Lisa is beautifully feline. Max becomes involved with Alice, unaware that she also dates Lucien.Meanwhile the real Lisa attempts to break free from her obsessive rich lover who may have murdered his wife. For this reason, she continues to avoid her apartment, which she has generously loaned to Alice. When these characters collide, the stage is set for a tragic denouement.