The protagonist of the story is Nina Kautsalo, a law enforcement officer from Finland. While tracking poachers, she discovers a woman in an abandoned house who has been beaten and sexually assaulted. At first, Nina believes she has found a dead body, but it turns out the woman is in a coma. The victim is not the only one - Nina discovers that a serial killer has emerged in the area, targeting foreign prostitutes. But that's not all...