John Smith, a London Cab-driver is married to a beautiful lady Mary and lives with her in their sweet abode at Wimbledon. But at the same time, John is also married to another pretty dame, Barbara, and lives with her in their love-nest at streatham.

Poor John has a knife-edge schedule to maintain two house-holds and his own sanity. But one day circumstances find him in the wrong house, at the wrong time and with the wrong wife. with the help of his friend, things can get only worse.

Mistaken identify plays a more than larger role. As the lies pile up and craziness ensues, John and his friend stanley try valiantly to keep nosy detectives busy and John's completely confused wives from running into each other. It gets complicated as the story gets madder and funnier as farces tend to do.

As the fog begins to lift and the confusion mounts, the laughs begin to roll. Where should John run now? For his life or wife?