Sixteen-year old Raven Highgate is not your average teenager, she is a vampire and this is her umpteenth time attending a new high school to keep her identity hidden. But when a local cop reveals she knows Raven's secret and offers to introduce Raven to others of her kind in exchange for help catching a murderer loose in the school, Raven has no choice but to accept. . .but at what cost?

美国黑足高中，名叫麦蒂（Caitlin Stasey 饰）的女孩正为在校啦啦队担任队长的友人艾莉克丝（Felisha Cooper 饰）拍摄纪录片。艾莉克丝张扬跋扈，不可一世，与橄榄球队的明星球员特瑞（Tom Williamson 饰）打得火热，谁知她却在风光之顶惨死镜头前。在此之后，翠西（Brooke Butler 饰）接替艾莉克丝的位置站到了顶端，特瑞也成为她囊中之物。悲愤交加的决心摧毁特瑞他们这群贱人的毕业典礼，于是置办行头加入关系混乱的啦啦队，并和翠西越走越近，这让她另一位友人——举止怪异的莉娜（Sianoa Smit-McPhee 饰）颇为担忧。在某个狂欢之夜，一场似乎被诅咒的争执和意外发生。