Spain, 1861, after 25 years as a policeman, José María Benítez has the job of Chief Inspector in his sights. He must put his ambition on hold when a servant for the wealthy Ribalter household is found murdered. As he sorts through family secrets, Madrid experiences a political upheaval spurred by General Leopoldo O'Donnell. Benítez must fight his personal demons while striving to keep his integrity during these turbulent times.