Ukraine, 1943. On a train from Ukraine to Germany, Lisa Smirnova is terrified for her life. The train is under Nazi command, heading for one of Hitler's rumoured labour camps. As she is taken away from everything she holds dear, Lisa wonders if she will ever see her family again. In Nazi-occupied Kiev, Irina Antonova knows she could be arrested at any moment. Trapped in a job registering the endless deaths of the people of Kiev, she risks her life every day by secretly helping her neighbours, while her husband has joined the Soviet partisans, who are carrying out life-threatening work to frustrate the German efforts. When Lisa's train is intercepted by the partisans, Irina's husband among them, these women's lives will take an unimaginable turn. As Irina fights to protect her family and Lisa is forced to confront the horrors of war, together they must make an impossible decision: what would they be willing to lose to save the people they love?