Pamplona, 1973. Police Inspector Eusebio Luquin is asked to solve the rape and murder of a young woman near the army barracks. Although the army offers little help with the investigation, Inspector Luquin quickly uncovers some vital clues that he thinks will have the case wrapped up in no time.
But just as it appears that everything has been solved, a shocking series of events will force Luquin to reopen the case, which it seems some people are keen to keep unsolved.