A group of workers builds a bridge near a large dam. They get drunk with a visiting reporter, who falls into the river and disappears.

A psychological portrait of a missing girl is drawn by the people who knew her, being interviewed by a journalist helping in the search.

World War II. Lieutenant Bogdan Mayer is tasked with delivering a sample of valuable metal alloy from Warsaw to London.

Three Polish resistance fighters hide in an old castle inhabitated by an old baroness and her relatives.