When Simon brings his twelve-year-old son, Finn, to rural Vermont to help flip an old farmhouse, they encounter the malicious spirit of Lydia, a previous owner. And now with every repair they make, she's getting stronger.

A fateful event leads to a job in the film business for top mixed-martial arts instructor Mike Terry. Though he refuses to participate in prize bouts, circumstances conspire to force him to consider entering such a competition.