A nebbish writer falls in lust with his beautiful neighbor, but she won't give him the time of day. The writer's landlord gives him a love potioin to make the woman fall madly in love with him. Emphasis on the "madly" part.

Indebted unhappy married couple, Lou and Irene, commit a life insurance fraud. Lou's brother Billy helps him fake his death and leave for Mexico. But Irene and Billy fall in love and when Lou returns, they claim they don't know him.