Toto is a nice scoundrel: he just steals dogs, which he then returns to their owners. The often-generous rewards he receives in this way allow him to live without getting too tired. One day, he meets young and pretty Ginette, with whom he falls head over heels in love. Unfortunately, he is arrested by the police and sentenced to one year in prison. Will the beauty wait for him until his release? And if she does, won't he need to give up his bad habits sooner or later--and can he?