After an experimental drug trial goes horribly wrong, the surviving test subjects have to fight off sleep, and each other, to stay alive.

　　1953年，黑人家庭Emory一家从北卡罗来纳州搬去洛杉矶的一个全白人社区，看似理想安逸的地方却隐藏着现实与超自然的危险。