A young American has her ship torpedoed by a German U-boat but makes it back to her ancestral home in France, where she witnesses German brutality firsthand.

Donald Gray is accused by his partner of dishonesty. The shock of the accusation kills him, and since his innocence cannot be proven, his daughter takes it upon herself to avenge the insult. Meeting Alan Burnham, the couple's only child, he decides to ruin his career.

The story of a girl who rebelled against the "double standard" of morals, and demanded that women should have as much right to expect virtue in the man they are going to marry as a man expects of a woman.