When the Powers of Darkness infest a small New England town...

A tortured young man, a powerful psychic, a mysterious teacher, and a desperate mother with a hidden past fight for their lives and their souls against the evil that binds them together and threatens to destroy them all.

As his eighteenth birthday approaches, Rick Williams experiences violent, unexplainable headaches. His mother dismisses them as a simple allergic reaction. Her odd behavior, and the severity of the headaches, leave Rick and Nicole, his potential girlfriend, dissatisfied with that explanation and searching for a better one. Enter Terrence, a mysterious substitute teacher at the local high school in scenic Maplecrest, Vermont. With Terrence's encouragement and influence, a group of seemingly normal students turns a routine science lab experiment into a frenzy of sadistic mutilation.

Against Rick's better judgment, Nicole eagerly seeks the help of a retired psychic to find out what Terrence wants from them. The psychic warns that they are all in grave and immediate danger. An unseen force attacks them during the session causing Rick to question whose side some of these "helpers" are really on.

As they get closer to the terrifying truth, some of them will die, making the rest of them more frightened, and yet more determined than ever to see good triumph over evil in the final supernatural showdown. Those who live to see the unholy ritual would be wise to remember that the Devil always collects his due.