In a remote cabin on the evening of a record-breaking blizzard, a young woman plots to poison her abusive husband in order to end their toxic relationship once and for all. When the poison fails to kill him, she not only has to quickly concoct a backup plan, but also contend with her husband’s increasing suspicion that his intensifying illness isn’t wholly accidental. And with the unexpected arrival of her brother, her carefully crafted scheme threatens to spiral ever further out of control. Now trapped together as the snow piles up, double-crosses and horrifying secrets threaten to ensnare each of them in their own spiderwebs of deception.