Two strangers, Jerzy and Marta, accidentally end up holding tickets for the same sleeping chamber on an overnight train to the Baltic Sea coast. Also on board is Marta's spurned lover, who will not leave her alone. When the police enter the train in search of a murderer on the lam, rumors fly and...
WWII. Zyga, one of the Resistance soldiers in Kraków is arrested by Gestapo. Soon later the Germans make a number of other arrests and Zyga is accused of being an informer.