The title says it all. Rutger Hauer is known only as "the hobo" in Hope Town--a corrupt city controlled by the criminals. Instead of getting back on his feet by begging for money and minding his own business, the hobo purchases a shotgun and becomes a vigilante bent on bringing justice to the city.
The movie was originally a fake film trailer: It was produced for an international contest to promote the release of Quentin Tarantino and Robert Rodriguez's double feature Grindhouse. After winning first prize, Hobo with a Shotgun, directed by Jason Eisener, was expanded into a feature film that was released in Canada and the United States.