A truck driver Charvát returned from prison six months ago. His colleagues know his past, but in front of his landlady and her 10-year-old son, Charvát comes across as a man of integrity and reliability. One weekend night, the man gives a lift to two female students who missed the last train. Unable to control his repressed desires, he rapes one of the girls and murders them both in a remote location. Their bodies are disposed of in a large dump. But the corpses are discovered the next day by an old forester, and the search is on.