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.