A criminal gang descends into the sewers of Paris and uses an interior exit to get their hands on a safe. They move it out of town, where they work to open it.

Young lovers separate, she to a career on the stage and he to remain in the small village in which they grew up. Years pass and he is hired to be a porter for a theater company and finds her, a far different woman who does not recognize him.

A squat, muscular dog steals a leg of lamb or mutton from a butcher shop, and the local constabulary, armed with truncheons, gives chase. Man's best friend, keeping a firm-jowled grip on the meat, leads the town's finest down streets, across boulevards, through a cellar and up the side of the building to a steep roof, then down again, and to his doghouse. The cops gingerly surround the place, then out bursts the canine and chases the entire force back to their station.