When a black-clad young man armed with a sword appears at the school in Trollhättan, people think it's a joke. Anton is a previously unpunished 19-year-old who suddenly commits a brutal mass murder.

Jimmie Andersson was 22 years old and previously unpunished when he murdered a 73-year-old woman. The time before the murder he had become isolated and the thoughts of murder had begun to occupy more and more of his time.

Early one morning, Susanne is on her way to work. What she doesn't know is that her former partner is waiting for her, armed with a rifle. What drives a decent man to brutally murder the woman he loved?