Leopold Socha is a sewer worker and petty thief in Lvov, a Nazi occupied city in Poland. One day he encounters a group of Jews trying to escape the liquidation of the ghetto. He hides them for money in the labyrinth of the town's sewers beneath the bustling activity of the city above. What starts out as a straightforward and cynical business arrangement turns into something very unexpected, the unlikely alliance between Socha and the Jews as the enterprise...

Dramatization of the massacre of 20,000 people (interned Polish officers as well as civilians accused of treason by the occupying Soviet forces) by the Soviet secret police at Katyń in the spring of 1940, and the cover-up that followed. Follows the fictional stories of four families, separated from one another in the confusion of September 1939, when the Soviets and Germans invaded Poland, through the Soviet occupation in 1945 when the truth of the...