Spain, 1692. The Spanish Inquisition is in decline, and as a result, their followers must be more ruthless than ever.
Spain, 19th century. In a small coastal village, Olalla and her family prepare to live a very special night, during which it is mandatory to comply with a single rule: no light must remain on.
This story takes place in the suburbs, at night in Madrid. Tomás, our protagonist, is a young 21-year-old actor who asks for a cab back home after going out partying. He is picked up by a driver, and what seems to start as a normal conversation between client and cab driver, begins to take a nuance out of the ordinary.
