In the 18th century in Madrid, the Marquess of Esquilache, King Charles III of Spain's former minister, bans on wearing the popular wide collar with a long coat and brimmed hat. Along with other measures provoke a massive riot in the city.

Madrid, Spring 1913. During a visit to the casino, a beautiful 20 year-old woman catches the eye of a 50 year-old rich widower. But the gamble he is about to commit is far greater than he suspects.

After a period of inactivity, Crisanto, a police inspector, returns to the service. When a friend of his is murdered, he decides to take over the investigation.