Viktor, an Afghanistan veteran, comes to Stockholm on behalf of the Russian mafia. Ronny is a Swedish policeman, educated in the east and with a strong will to stop the mafia with violence. Josefin, a young woman, becomes a witness to a homicide but doesn't dare to tell what she has seen. Soon Viktor who is hunted by both the mafia and the police feels that his inner self starts to protest against the "Heart of stone" he has created for himself during many years of violent fights.