Mandy (Andrea Riseborough) is a raven-haired woman living in isolation in the woods with her lumberjack husband (Nicolas Cage). Usually donning some deathmetal t-shirts or her husband's baseball jersey and a nasty scar across her face, Mandy possesses that other-worldly, melancholy aura. Perhaps it's that aura that attracts a gang of violent religious nuts to her- a cult headed by Jeremiah (Linus Roache). The gang break in to their cabin one night. They tie the husband up. But after being rejected by Mandy, Jeremiah and the gang sets her on fire in front of the husband.
Her death propels the movie descending rapidly into total mayhem and provides perhaps Nic Cage's Nic Cagest performance in years. That long take rage scene in his underwear in the bathroom is a sight to behold. There are Hellraiser type demons, a tiger, axe smelting, a King Crimson song, a chainsaw fight, multiple title and animation sequences thrown in. Normally a concoction this wild and unwieldy wouldn't work at all, but Costamos manages to make Mandy, through dark brooding visuals and Jóhan Jóhansson's soundtrack, a visual tone poem akin to Valhalla Rising, with Cage as our avenging angel, slogging through hell and back (or not). It's an amazing visual feast and a cult classic in the making.
