Somewhere in the primal wilderness near the Shadow Mountains in the year 1983, Red Miller (Nicolas Cage) has fallen deeply for the deceptively charming Mandy Bloom (Andrea Riseborough). However, the life he has made for himself comes crashing down suddenly and horrifyingly, when a vile band of ravaging cultists and supernatural creatures desecrate his idyllic home with vicious fury. A broken man, Red now lives for one thing only—to hunt down these maniacal villains and exact swift vengeance.