Teenage outsider Maddy (Caitlin Stasey, I, Frankenstein) is keeping some dark secrets and holding a serious grudge against the captain of the Blackfoot High football team. When Maddy joins the school's elite and powerful cheerleading squad, she convinces her new friends to help inflict her revenge. After a late-night party goes awry, their plans take an unexpected turn for the worst and all of the girls die. A sinister, supernatural power intervenes and the girls mysteriously appear at school the next day with a killer new look... and some unusual new appetites.