After reviewing all the murders of women in the area, Captain Rojas believes he has found his serial killer''s "Case Zero": a prostitute, whose body appeared on a beach two years ago. While Rojas pursues this lead, Carrasco has suspicions about a volleyball teacher who taught several of the missing girls. The information spreads amongst the neighbours, who want to take justice into their own hands

The case of the Alto Hospicio Psychopath reaches national coverage, but Rojas' investigation into institutional corruption in Hospicio puts him in the sights of several powerful men in the area.