After returning home to Luxembourg from a German university, François (Grégoire Leprince-Ringuet) is faced with the dilemma of being drafted into the Wehrmacht where he will be sent to the front to kill Allied soliders, or resisting and giving up his life to go into hiding. François opts for the latter and is taken by a family friend to an old abandoned mine that houses a number of deserters, known as ‘réfractaires’ (‘refractory people’, or to use the American translation, ‘draft dodgers’). Tainted by the actions of his father, who had collaborated with the Germans before being murdered, François has to earn the trust of the men and eventually begins to serve the resistance movement, where he soon discovers that the struggle to liberate his homeland is equally as dangerous as the battle on the front lines.