Checoslovaquia, 1941. Mientras la guerra continúa, el Protector del Reich Reinhard Heydrich llega a la Praga ocupada por los nazis y establece un régimen de terror que obligará a los luchadores por la libertad a actuar. Pero el precio a pagar será demasiado alto.
Two families, Sebkovi and Krausovi, are celebrating Christmas, but not everyone is in a good mood. The teenage kids think that their fathers are totally stupid, and the fathers are sure that their children are nothing more than rebels, hating anything they say.