 In 1917, Jack Powell (Charles  Buddy  Rogers) is a young man with passion for cars. His next door neighbor is Mary Preston (Clara Bow), who is in deep love for him, but Jack does not notice her. Jack indeed loves Sylvia Lewis (Jobyna Ralston), but she is in love with the rich David Armstrong (Richard Arlen). When USA enters in World War I, Jack and David join the Air Force to fight in France and become pals. Mary joins the Women s Motor Corp, trying to be close to Jack. But it is war, and a tragedy happen between the two friends.