A family drama encompassing both world wars - Sergeant Mark Bayley was a flying ace before he was shot down over German lines in 1918. As he falls in love with German nurse Karolina, things look perfect even for his motherless son John, whom Karolina adopts. As long as Karolina lives there is harmony, but after her death their son Max finds himself seduced by the German Fatherland. The brothers will fight on opposite sides of the coming war . . .