Four high school friends meet up in an abandoned house to play 'Backstabbed', a game of murder with headphones and plastic weapons. Meanwhile, a serial killer is leaving a trail of blood on his way to the house, and soon the game of murder becomes much more than make-believe.

Hans is the name of the film's driving force and central character, an arrogant and fascinating firebrand who meddles in other people's lives with great energy. His son Jesper can only escape him by getting drunk. This is not a smart move when you are a firefighter at the station where your gruff father is the boss. Jesper is kicked out of his job and his home. Shortly afterwards, the only person who loves Hans patiently and unconditionally dies: his mother, whom he calls the Angel. Hans is guilty, he falls apart, tries to kill himself, but ends up blind – and alone.

Jeppe falls for a mysterious girl from school, but their relationship is on borrowed time.

Gunman Flame and his partner Citron assassinate Nazi collaborators for the Danish resistance. Assigned targets by their Allies-connected leader, Aksel Winther, they relish the opportunity to begin targeting the Nazis themselves. When they begin to doubt the validity of their assignments, their morally complicated task becomes even more labyrinthine.