Two detectives begin an investigation on the ethics involved in the top-secret research facility, Porton Down. One experiment, in particular, stands out to them as the most horrific, The Sleep Experiment, a scientific experiment that took place during the Cold War. The experiment consisted of five prisoners, deemed Enemies of the State, being locked in a sealed gas chamber. An airborne stimulant was continually administered to keep the subjects awake for 30 consecutive days. The prisoners were falsely promised that they would be set free from the prison if they completed the experiment.