Overview: Spring 1943: A three-member group of resistance fighters flies from a Soviet military airport into the Protectorate of Bohemia and Moravia to establish contacts with an illegal communist center in the occupied territory.
Overview: Françoise, a French sociology student, moves to Czechoslovakia to write her thesis. She falls in love with Pavel, a professor. But the events of the "Prague Spring" begin and Pavel decides to collaborate. Françoise returns to France and meets up with her militant friends on the eve of the events of May 68 in Paris.