After a supernatural romp with a satanic emo band, hot cheerleader Jennifer (Megan Fox) is transformed into a demon with an insatiable appetite for high school boys. Now, it's up to Jennifer's BFF, Needy (Amanda Seyfried), to protect the guys from the bloodthirsty man-eater. Penned by Diablo Cody (Juno), this one-of-a-kind horror comedy co-stars Adam Brody as the devil-worshipping band's lead singer.