A medical student suffering from sleep paralysis finds herself plagued by a demonic entity, after moving in with her boyfriend.。一名单亲妈妈（塔拉吉·P·汉森 Taraji P. Henson 饰）过着困顿的日子，生活混乱失序，甚至无意间成为罪案嫌疑犯。她本就对人性失望，而现在要想脱离困境，唯一的转机却是要对身边的人付出信任。。