一个隐蔽的海洛因治疗中心的病人和工作人员必须与他们自己的恶魔进行战斗，因为一个神秘的杀手开始一个接一个地把他们抓走。

　　The patients and staff of a secluded heroin treatment center must do battle with more than their own demons as a mysterious killer begins picking th