Montmartreinthesummertime.Agroupofstreeturchinsidlesoutsidewhiletheotherkidsoftheneighborhoodareawayonholiday.Tokeepthegangbusy,Pivolo,theirleader,hasanidea:theyaregoingtokidnapAuntFaguet'sdoggy.Justforthefunofit.Afewdayspassafterthecrimeisaccomplishedandoneofthemsuddenlyrealizesthatarewardisbeingofferedbytheaunttoanyonewhowouldbringherherpetback.MademoiselleHélène,thekind-heartedsocialworker,doesitforthemandgivesthemtherewardmoney,whichisinstantlyexchangedforlollipops,nougatandmerry-go-roundandcinematickets.