A fish out of water at a new school, 15-year-old Mia (Luna Wedler) succumbs to her anti-authoritarian tendencies in hopes of winning over a coven of mean girls. In turn, her flesh revolts against her, afflicting her with a series of macabre transformations that require drastic measures to keep at bay. Amplifying every teenager's insecurities to supernatural extremes, Lisa Brühlmann's debut is a frank portrait of adolescent carnality and vulnerability that doubles as a body horror film for the ages.