Leonard (Mark Rylance), a master English tailor who's ended up in Chicago, operates a corner tailor shop with his assistant (Zoey Deutch) where he makes beautiful clothes for the only people around who can afford them: a family of vicious gangsters. One night, two killers, Richie (Dylan O'Brien) and Francis (Johnny Flynn), knock on his door in need of a favor - and Leonard is thrust onto the board in a deadly game of deception and murder.