Following a botched assassination attempt, Aaron is locked away in Alcatraz Federal Prison: never to see the light of day again. However, with the introduction of the system, Aaron gains the chance to escape. It won't be easy, monsters run rampant, and demonic alien invaders have turned the prison into a stronghold. Not to mention the prison's original inhabitants - the most dangerous criminals in all of America.

Faced with overwhelming odds, his only hope of escape lies in understanding the secrets of the mysterious system.