At Blackfoot High School, arrogant varsity football captain Terry Granger rules the halls, while rebellious outcast Maddy Killian nurses a burning hatred for him after the tragic death of her
former best friend, Alexis, who died during a cheerleading stunt caused by Terry's reckless behavior. Seeking justice and a way to infiltrate the popular clique, Maddy successfully auditions for the cheerleading squad. Her audacious move catches the eye of Leena St. John, a secretive, fiercely independent girl on the team rumored to possess supernatural powers.As Maddy befriends the vulnerable squad members—including timid cheerleader Martha and fiercely loyal Tracy—she formulates a plan to expose Terry’s toxic masculinity and violent abuse. However, the plot derails dramatically during a secret party in the woods. When Terry discovers
the cheerleaders are recording his confession regarding Alexis, a violent confrontation ensues. Terry attacks Maddy, and in the ensuing chaotic struggle, the star quarterback accidentally pushes Tracy off a steep cliff, plunging her to her death. Panicked and enraged, Terry and his thuggish teammates ruthlessly murder the remaining cheerleaders one by one to cover up their horrific crimes.Left alone in the woods, Leena uses an ancient, dark Wiccan ritual to resurrect Maddy and her fallen friends. The girls awaken transformed, possessing supernatural strength, resilience, and an insatiable hunger for revenge. They realize they are no longer entirely human; their hearts no longer beat, and they require blood to sustain their undead existence.Instead of hiding, the newly empowered cheerleaders return to school with a chilling new agenda. They systematically lure Terry and his football buddies into traps, using their supernatural allure and terrifying new powers to torture and dispatch the boys in gruesome ways. Terry, realizing he is outmatched, attempts to rally the town against them, but his efforts are useless against the unstoppable undead squad.In a shocking twist, it is revealed that Leena engineered the entire sequence of events, using Maddy's thirst for vengeance as a catalyst to harvest the life force of the town's youth for her own dark coven. Maddy discovers that Leena manipulated her grief, but rather than fighting her savior-turned-master, Maddy embraces her new dark reality. The surviving cheerleaders officially accept their monstrous new identities, cementing their unbreakable, supernatural bond and standing victorious over the ruined lives of their tormentors as the undisputed rulers of Blackfoot High.