In Montelimar, four young women whom life has not spared want to emerge from mediocrity. They decide to rob a bank, but everything is not so simple and the perfectly developed heist could turn into disaster.

Serge Vaudier, a mathematics teacher, wins the lotto twice and claims he can do it again, thanks to an infallible system he has designed. Is a he genius or a con man? Angèle, the head of the the government's bureau, is determined to entrap him. She asks her secret lover, Jacques Loriot, an expert player in the casinos, for help.

Romaine, a tall thirty-year-old woman, has not found herself yet. She has been living for several years with her boyfriend Justin. When, overnight, the latter drags her after him to Canada in order to start a new life, she blows smoke. Not only does she hate surprises but she is scared to death of taking the plane. Once in Montréal Airport, she dumps Justin after confessing to him things he would rather not have heard. Her Far North adventures can start...