Catherine Foster (Scarlett Johansson) is a happily and recently married woman, in the process of building her family, her life dream. Peter Graham (Robert Downey, Jr.), head of the service of the hospital she worked in, was a man that Catherine always kept away from, afraid her attraction towards him could ruin her perfect life. But when death played a prank on her life, and everyone else gave up on her, unaware of the fact she was carrying a baby, who would be the one to refuse letting her go?