Lili, a 17 year old typist., gets involved in an underground resistance mission to free three British soldiers and get them out of France. But everywhere there is danger, as in occupied France, the Germans are everywhere.
When all of the Résistance paper staff is arrested by French police, Lili is sure there is a traitor among them, one who can bring a fatal blow to their group of resistance!
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 our young resistance fighters.