Alison Blanchard, who is in training to become a physician, starts taking her required Gross Anatomy class where she must confront rows of cadavers--and her own fear of mortality. When the sheets are drawn back to reveal her designated cadaver, Alison senses a strange presence in the lab. Her jaded professor chalks it up to first year "jitters," but her worries increase when a friend is mysteriously found dead in the basement. Alison must find out the story linked to the truth of how her cadaver got there, before its angered spirit can wreak further vengeance on those who dared to disturb the body.