All begins in a rundown bar outside of Paris where a regular man realizes he has a winning lottery ticket only to be shot in a crime that needs to be quickly covered up.

Benjamin is a PhD student without scholarship support. Under the pressure of his parents, and in need of money, he becomes a substitute teacher in a middle school. Without training nor experience, and facing a declining public educational system, he discovers how tough this job can be. Hopefully, his supportive and committed colleagues will lead him to take a fresh look at the profession.