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

Following the trail of disappearances leads Rojas to 'La Ponderosa' a place in the middle of the desert where private parties are held with prostitutes, many of whom are minors.