当高中高年级学生布莱德·李在毕业典礼当晚失踪时，他的女朋友被迫质疑她认为她知道的关于他和他们的关系以及她自己的信仰的一切，希望能找到他。

A young man trapped in his apartment with a swarm of demons outside his door must find a way to survive the night and escape from apartment 213.

　　After troubled teen Katie is sentenced to house arrest, she falls for an attractive young man named John who has just moved in next door. While their affair seems harmless at first, Katie becomes increasingly convinced that there's more than meets the eye with John.