A celebrated singer in WWII occupied France joins the Resistance to save her estranged family from being killed in a German prison.

In Occupied France, the Resistance trembles on the brink of destruction. Its operatives, its secrets, its plans, all will be revealed. One of its leaders, wealthy aristocrat Baron Paul de Rocheford, has been killed in a raid and the surviving members of his cell, including his wife the elegant Baronness Lillian de Rocheford, have been arrested and transported to Germany for interrogation and, inevitably, execution.

Captain Max Ryan, British SOE, is given the job of penetrating the impregnable German prison where the Baroness and the remnants of the cell are being held and tortured. If they can't be rescued he must kill them before they can give up their secrets.

Max is in Paris, currently living under a cover identity as a show business impresario whose star attraction is Genevieve Dumont. Young, beautiful Genevieve is the toast of Europe, an icon of the glittering entertainment world that the Nazis celebrate.

What no one knows about Genevieve is that she is Lillian and Paul de Rocheford's younger daughter. Her feelings toward her family are bitter since they were estranged twelve years ago. But when she finds out from Max just what his new assignment entails, old, long-buried feelings are rekindled and she knows that no matter what she can't allow her mother to be killed, not by the Nazis and not by Max. Through the Resistance, she is able to contact her sister Emmy, and the sisters put aside their estrangement to work together.

It all hinges on a command performance that Genevieve is to give for a Gestapo General in the Bavarian town where her mother and the others are imprisoned. While Genevieve sings and the show goes on, a daring rescue is underway that involves terrible danger, heartbreaking choices, and the realization that some ties, like the love between a mother and her daughters and between sisters, are forever.