Pining for her mother in a throng of bass-strumming and queer angst, teenager Gretchen (Hunter Schafer) wishes her mute stepsister Alma (Mila Lieu, Dodger) would just get lost. But when her estranged dad (Marton Csokas) and his new wife (Jessica Henwick, Glass Onion) accept creepy Mr König's (Dan Stevens) job offer to overhaul the architecture of a suspiciously Overlook-like hotel in the Bavarian Alps, Gretchen quickly regrets her sniping. There's something stalking the woods in a pale mackintosh, hotel guests can't keep their dinner down and a perverse experiment is proceeding unchecked - with dire consequences.