At 44, Kurosawa has spent twenty-six years as an unpromoted site foreman at a construction company, single, friendless, and so overlooked that his birthday passes with nobody remembering it. Fed up with a life he sees as empty, he sets out to win some respect from his coworkers, but every clumsy attempt at connection backfires into fresh humiliation. Then a middle-school girl named Shizuka picks him as an easy mugging target, and the fight that follows knocks his life onto an entirely unexpected path.