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.

How four friends, alone in the world and pulling the devil by the tail, decide to rob a bank to be able to pay their bills and avoid the foreclosure of their barely finished house. Their technique improving, between two bursts of laughter and a few bottles to distribute to their offspring, they do not resist for long the pleasure of starting over. They will end up imagining a last "big blow" which will definitely assure them a happy life and free from any worry.