When social worker Kaitlin Chambers is called to pick up her husband at the local police station, she is shocked to find a lanky, scarred doppelgänger waiting for her. The man who resembles her husband insists on transporting her and her daughter Camilla to their northern cabin, away from dangerous strangers and Lovecraftian creatures the likes of which she cannot imagine. With the world ending around them, can she put her trust in this man whose terrifying truth is only equaled by the horror his body has become?