Donna's senior prom is supposed to be the best night of her life, though a sadistic killer from her past has different plans for her and her friends.

Donnas senior prom is supposed to be the best night of her life, one of magic, beauty, and love. Surrounded by her best friends, she should be safe from the horrors of her dark past. But when the night turns from magic to murder there is only one man who could be responsible, the man she thought was gone forever. Now, Donna and her friends must find a way to escape the sadistic rampage of an obsessed killer, and survive their Prom Night.

From the director of Friday the 13th and The Texas Chainsaw Massacre and the producers of Paranormal Activity and Insidious comes new Horror. During an all-night, drug-fueled party at an abandoned asylum known for the horrific treatment of its patients, a group of ordinary teens decide to experiment with the occult, mysteriously leading to a violent possession. In an effort to find help, the group rushes to escape, only to find themselves locked inside with no means of communication. Tempers flare, trusts are broken and in attempt to save one of their friends possessed by the demon, the amateurs try to perform an exorcism. Instead of solving the problem, and unbeknownst to them, they unleash an even more powerful and vengeful spirit, one with a distinct motive and which wants them all dead. The teen's only chance of survival is to uncover the asylum's deep mysteries and find a way out before it's too late. Their search for answers uncovers the asylum's dark past and the terrible ...