World War I aviator Carbot attempts to establish a commercial airline after the war, for the purpose of delivering the mail to the outermost regions of France.

To his chagrin, young Marcel Pagnol and his family move back to their home in Marseilles, France, far from their pastoral holiday cottage in the hills. Determined, Marcel makes the long voyage back to the cottage on foot and lands himself in trouble. One day Marcel's father discovers a shortcut to the cottage, but it requires trespassing. Despite their trepidations, Marcel and his family begin using the secret trail to reach their cottage.

一个神秘的疯子应召女郎正在杀Mme Clos夫人(Danièle Vlaminck饰)，Mme Clos夫人与应召女郎组织有关。Leila(Claude Janna饰)还在莫斯科传教没有回来，夫人要把她的一些女孩送去牙医那里然后把那些女孩变成应召女郎，再去世界各地传教。Jacques Lefin(戈蒂埃饰)是负责的侦探，但当他看着女孩尤其是美丽的Gigi(埃里卡·酷饰)时他被跟踪了，他需要冒着危险拯救他们。