半年前,17岁的布兰特(Xavier Samuel 饰)与父亲驾车遭遇车祸,父亲身亡,布兰特和母亲始终没有从伤痛中走出。同校的劳拉(Robin McLeavy 饰)邀请布兰特同去舞会,布兰特木讷的予以拒绝,转头陪伴自己的女友赫莉。当天布兰特独身在野外攀岩,当他来到山顶时,久候多时的劳拉之父将他麻醉带走。 布兰特醒来时,发现自己被困在劳拉家中,这个看上去文静的微胖女孩居然利用自己的父亲将多位男孩绑架,父女二人残酷的虐待他们,最后用电钻把他们的头骨钻开变成嘶哑的痴呆。劳拉的母亲也不能免于折磨,她形容枯槁奄奄一息,被父女二人视为无物。面对这对关系暧昧的怪异父女,布兰特必须用尽一切办法自救……In order to avoid a ghostly figure in the road, high school senior Brent Mitchell wraps his car around a tree, killing his father. Constantly confronted by his mother's emotional collapse after the accident, Brent escapes into a marijuana fueled world of loud metal music to block the pain and guilt. Dejected and out of sorts, he has a shot at happiness with his girlfriend Holly, a grounded, caring girl with drop dead good looks, a dream date for the high school prom. But his plans are thwarted by a disturbing series of events that take place under a mirrored disco ball, involving pink satin, glitter, syringes, nails, power drills and a secret admirer. Brent has become the prom king at a macabre, sadistic event where he is the entertainment.