Four insomniac med school students are lured into a neuroscience experiment that spirals out of control and must find a way out before it's too late.。故事讲述一对夫妇结识了新搬进城的凯蒂母女，他们发现凯蒂的言行举动十分古怪，她的到来似乎别有隐情。一切背后究竟隐藏着怎样的秘密？。