An animal psychologist who studies foxes saves the life of a strange autistic girl, Dina, but becomes a suspect in the murder of her friend. He is forced to begin an independent investigation, and to do this, establish contact with the savage Dina, far from social norms and restrictions. Gradually, he finds out that teenage girls have been disappearing in the area for more than 20 years, and only Dina can give the keys to catching the criminal, who is also her own father.