Simmering marital tensions and unexpected complications weigh heavily on the conscience of a seasoned contract killer in this dark thriller from Down Terrace director Ben Wheatley. An ex-soldier in desperate need of work, Jay (Neil Maskell) is hosting a dinner party with his wife, Shel (MyAnna Buring), when the conversation with guests Gal (Michael Smiley) and Fiona (Emma Fryer) turns suddenly combative. In the aftermath of the incident, Gal proposes to Jay that they both earn a hearty payday by accepting a few well-timed contract jobs. Meanwhile, as the pair go to work getting a lock on their targets, Jay finds himself increasingly distracted by domestic issues and his growing desire to be a good father. Jay's paternal instincts drive him to violent extremes, however, when he makes a shocking discovery about one of the men on his list. Later, after finding a new tool to get the job done, the details of Jay's latest assignment begin to take on deeply ominous undertones.