Near the end of the war in Germany, GI Steve Boland, a self-described "sharp-operator", meets a German girl, Ilsa, and they fall in love. Ilsa's brother Karl, whom she has not seen in three years, and his fellow Nazi Ludwig visit Ilsa. Karl proudly informs her that he and Ludwig are "Werewolves", a group of Nazi assassins parachuted behind Allied lines for the purpose of killing Allied High Command officers. She and Steve go to Army Intelligence with their information, where Steve is immediately arrested for being A.W.O.L. Captain Melton of Army G-2 intervenes on Steve's behalf, as G-2 has had a suspicion about the existence of the "Werewolves" but no concrete info before now.
Roland Dane finally retires to the house he was brought up in. Lost in thoughts of his lost love Lark, he does not want to be disturbed in his last days. However, the appearance of his niece and her subsequent romance with Lark's nephew causes him to reevaluate his life and offer some advice so the young couple doesn't make the same mistake he did, all those years ago.
