Alexis Berthier suffers a stroke and loses the ability to read and write. In order not to lose everything, he decides to re-educate himself and return to primary school.
Samy lives happily with his wife, Alice, in a poor urban housing project amongst friends and neighbours. For his son’s birthday, the richest man in France throws open his grand department store, offering the boy whatever he wants. Alexandre chooses Samy, the night watchman, as his new toy…