Lili joins a new resistance group led by Fredo, a 21-year-old communist, who trains her to use guns, knives and grenades. The Kid is captured by the Germans and sentenced to death by firing squad.
Lili agrees to go undercover to transport a new resistance paper, Combat. Key members of the young communist group are arrested. When the prisoners are tortured, Lili is in danger of being discovered.
Lili's mission to rescue Victoria from hospital is cut short when Victoria and other leaders of the resistance are captured by the Gestapo. Lili takes a chance to send a coded message to London.
Lili takes drastic action to escape the Gestapo but is later recaptured, along with Jeannot. The Americans are advancing on Paris, but will it be too late for the young resistance fighters?