在过度拥挤的西门监狱里,暴力和恐惧是基本的游戏准则。并且监狱长比看守和囚犯的首领有较少的力量,。最难对付的的囚犯是坚硬顽固的乔·科林斯。重要的是,乔怨恨首要卫兵上尉Munsey, 一位狭隘独裁的拥有绝对权力者。稍微违规违, 乔和他的伙伴们就要受苦了。但有次大屠杀反而成就了他们的逃命计划。At overcrowded Westgate Penitentiary, where violence and fear are the norm and the warden has less power than guards and leading prisoners, the least contented prisoner is tough, single-minded Joe Collins. Most of all, Joe hates chief guard Captain Munsey, a petty dictator who glories in absolute power. After one infraction too many, Joe and his cell-mates are put on the dreaded drain pipe detail; prompting an escape scheme that has every chance of turning into a bloodbath.