Dr Quinn Davidson and his wife, Marianna, have endured years of unsuccessful IVF and several miscarriages, and Quinn can't face another painful attempt to conceive. Marianna is desperate to be a mother, and their marriage is feeling the strain. At a small-town practice a few hours from their home, Quinn meets Rachel, the daughter of one of his patients. Drawn to each other, it's not long before they find themselves in a passionate affair, and Quinn realises he must choose between the two women. Then Marianna announces a surprise natural conception - news that will change the course of all their lives.