Corruption on the boxing circuit at the turn of the century provides the basis of this French drama. The story centers on a talented young fighter, a logger that Abel Ginoux and his Italian partner Zipolino, a crooked doctor, discover during a fight in a woodland town. The logger, Passe Partout, is in a fight with Ginoux's best fighter and ends up accidentally killing the pugilist. Ever the opportunist, Ginoux lures Partout into the ring to replace the late fighter.