Ken Marino stars as Duncan, a guy who just can’t catch a break. His boss (Patrick Warburton) is manipulative, cruel and crooked. His nagging mother (Mary Kay Place), burnout dad (Stephen Root), and pregnant wife (Gillian Jacobs) make demands on him left and right. And the pressure is building to be a real pain in the ass. Like literally, all this stress has created a demon in his gut that emerges from Duncan’s ass to wreak vengeance on those who cross him.