In Paris during the German occupation of France during World War II, an ill-assorted group of resistance fighters commits disorganized attacks. Missak Manouchian, an Armenian exile, is ready to help but is reluctant to kill; for him, being ready to die but not to kill is an ethical matter. However, circumstances lead him to abandon his reluctance. Under his leadership, the group structures and plans its actions and thus the Manouchian network is born. The film traces the story of this group, from its shaping to the arrest and execution of its members in 1944.