Clodo, a gentle mongrel dog, isn't having much luck. His shaggy appearance has earned him the name of hobo. Often scolded by his Parisian masters for being a nuisance, his only consolation is Cathy, his youngest daughter. Unfortunately, she can't stop her parents from abandoning Clodo at vacation...
Inspector Dubois investigates burglaries carried out by the Barbus gang. He tracks down the criminals and shoots some of them dead, before discovering that one of them is his brother.
