Rojas and Carrasco go after the girl killer that is wreaking havoc in the little community of Alto Hospicio, in the city of Iquique, Chile.

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