A switch of babies at birth results in a story mixing love, the mob, murder and war. An elderly couple tells their story of love for each other for their entire lives.
A young reporter is assigned to write a story about a couple near the end of their lives. She discovers a fascinating tale of a male baby switched at birth for one from a set of female twins. Unknowingly, the babies are raised as true siblings and start from birth having a lifelong love for each other.
As they grow up, there is a strong physical attraction which causes tension for each of them. Mike is slowly drawn into association with a crime syndicate in an effort to protect Mary. They both struggle with their own feelings for each other as well as resist being pulled into a life of crime.