20 volunteers agree to take part in a seemingly well-paid experiment advertised by the university. It is supposed to be about aggressive behavior in an artificial prison situation. A journalist senses a story behind the ad and smuggles himself in among the test subjects. They are randomly divided into prisoners and guards. What seems like a game at the beginning soon turns into bloody seriousness.
A naive young man assumes a dead man's identity and finds himself embroiled in an underground world of power, violence, and chance where men gamble behind closed doors on the lives of other men.
A man must survive a prison where hardened criminals battle to the death for the warden's entertainment.
