Two adjoining hotel rooms. In one, there's a killer called Ralph Milan. In the other, a suicidal man called François Pignon. Pignon has met with disappointment in love. Milan has to meet a man he's going to kill. Between the two rooms: a communicating door. And when it opens, Ralph, the perfectly oiled killing machine, sees the enormous grain of sand that François Pignon is coming straight at him. Pignon, who wholeheartedly deserves, without any argument, the title of World Champion Pain in the Ass.