A group of high school students are sent to after-school detention for unexplained reasons. There, the teenagers find themselves abandoned and locked in the classroom after their detention teacher leaves, then mysteriously disappears. With night slowly approaching, a thunder storm builds outside. The heavy rain and lightning cause a massive power failure throwing the school into total darkness. Then, strange, haunting images of ghosts begin to appear in the school. The kids manage to break out of the classroom only to find that the old building has taken on a life of its own, keeping them trapped inside. As they struggle to escape, the teenagers learn about the death of a student back in the 1970s. Slowly, they unravel the history of this tragedy and that they are somehow connected to the student's macabre and untimely death. They will also soon find out that they are being held responsible for this horrific event of the past, and will pay for it with their lives!
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