Intense German thriller inspired by the famous Stanford University prison experiment. Taxi driver Tarek (Moritz Bleibtrau) volunteers for an experiment in which a group of subjects will be divided up into guards and prisoners and locked up together for 14 days. Arriving at the 'prison', Tarek is assigned the role of prisoner, and by the end of the first day has already run into trouble with the guards. Over the coming days, the tensions between the two sides grows ever stronger and eventually results in a situation of open conflict.