Based upon a true story, the movie centers on the German communist Robert, a "Kapo" in a concentration camp. When some Polish children are brought to the camp, Robert tries to save them from certain death. Due to his efforts they are being trained as masons and become part of his construction gang....
1945. A packed ferry drifts down the Vistula after its tow rope snaps. Only a single militiaman sees notices the ferry and organizes a rescue before the it drifts into the Gdańsk Bay, which is still full of mines.