For undisclosed reasons, the entrances and exits of a Berlin apartment building are blocked for the time being. No one gets in or out. Left in the dark by the police, the residents start to speculate. First they assume there may be a bomb planted right outside the door. Then a rumour about a criminal hiding in the courtyard spreads. Suspicion turns into insecurities which turn into aggression. Prejudices bring polarisation, old conflicts come to light again and the residents start to suspect and denounce one another. In this situation of existential danger, they lose their mask of human decency. They start to show their real faces and each one of them pursues their own interests in this play of power and capitalism.