Lucy Grayford is devastated when she discovers that her daughter is not actually hers -- six years ago there was a baby mix-up. Then she meets single dad Dominic Grayling and they discover they now have each other's biological child. She can't bear to lose the child she's grown to know and love...but she yearns to know her biological child, too. It's a heartrending situation where there seems to be only one solution....