He knows more than you are

A group of high school students are sent to after-school Detention. There, the teenagers find themselves abandoned and locked in the classroom after their detention teacher leaves, then mysteriously disappears. With night rapidly approaching, a thunder storm builds outside and heavy rain and lightning cause a massive power failure, throwing the school into total darkness. 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 find that they are somehow connected to the students macabre and untimely death. They will also soon discover that they are being held responsible, and will pay for it with their lives!