John Smith may seem like an ordinary taxi driver, but he has been keeping a big secret. He has a loving wife named Mary in a flat in Wimbledon, and he has ANOTHER loving wife named Barbara who lives in a different flat only four minutes away. When he heroically attempts to save an old woman from two muggers, he gets bashed by her handbag and receives attention, not just from the hospital, but from the police. When two different detective begin asking too many questions, John must rush back and forth between his two wives, trying to untangle the marital mess he has made. To make matters worse, John’s unemployed, moronic friend Stanley Gardner tries to help in the deception, but that simply leads to more hi-jinks when the police detective believes that John and Stanley are gay.