Paris 1920. Mr. Julien (Michel Galabru) has been a bellboy with "Maxim'S" for many years. Perspicacious, affable, helpful and stylish in his shimmering uniform, he is the indulgent accomplice of the great men of this world and the small women who gravitate around them. Also, when he announces to his boss his …

时值1935年二战期间，法国国内局势混乱。一对小混混雅克和布鲁诺专门以盗窃新款的雪铁龙车为乐。并且组建了一个“前置引擎驱动团伙”，与警察们玩起了猫捉老鼠的游戏，这一玩就是10年。雅克等人享受着这个惊险而刺激的过程，不断偷窃，逃跑，并以摆脱追捕为荣。而动荡的环境下，好坏是非已经渐渐模糊，好人便不再永远是绅士，而坏人也不注定就是…