Mary Brenton, daughter of wealthy Anthony Brenton, marries a man her father doesn't approve of, and they become estranged. When she tries to return home, her father refuses to let her in. Her daughter Angele disguises herself as a Belgian war refugee and her grandfather, not knowing who she really is, takes her into his house--and eventually into his heart. However, trouble arises in the form of the Brentons' greedy housemaid, a clandestine German spy ring, and an American agent tracking them.