L'ufficiale della Guardia Civile Rosa Vargas arriva in una piccola città della Galizia per indagare sulla scomparsa di una ragazza adolescente, e presto sviluppa una teoria agghiacciante.
Using one of the costumes found in the old factory as a lead, Rosa tracks down the shop it came from, and later dons her own disguise to go undercover.
Memory cards found in Marta's belongings reveal a new suspect with a fetish, while forensic results from the factory scene point to an unusual hobbyist.
