The film begins with Alphonse Tram (Gérard Depardieu), a less than gregarious character, idly chatting to an accountant who is travelling home very late. The accountant, a man of orthodox social outlook and standing is disturbed by and fearful of this rambling loner, more so when Tram attempts to give him his bloodstained knife (in order to reduce the chances of him "doing something silly..."). They argue and the accountant puts the knife on a seat a few feet away behind them. They argue some more and then notice the knife has disappeared.