At an international boarding school, nutrition teacher Miss Novak joins the staff to instruct a new class on “conscious eating.” When she forms a close bond with five impressionable students, their relationship takes a dangerous turn.

Starring Mia Wasikowska in a sharp performance of monomaniacal control, Jessica Hausner’s withering film immerses itself in the perils of clean-eating. Spiked with bilious, fluorescent yellow, the precise framing of this smart satire mirrors the allure of perfection and groupthink’s dangerous ends.