Inspired by an investigation by journalist Olga Wornat, the series reconstructs the case of Daniel Arizmendi, aka "El Mochaorejas" (The Earcutter), one of the most ruthless criminals in recent Mexican history. The story follows a journalist who, through archives, testimonies, and memories, unravels the rise of the kidnapper who sowed terror in the 1990s, as well as the complex web of corruption and fear that allowed his gang to operate with impunity.