In the 1950s, Nok, a pickpocket and adventurer, is hiding from his "colleagues" in the small French town of Saint-Maurice, where he pretends to be a licensed doctor. He has devised a clever yet simple plan to maintain his livelihood: he treats healthy people for non-existent illnesses. Nok, a master of manipulation and seduction, is almost at the end of his journey, but two minor obstacles stand in his way: he falls in love, and a friend from his past unexpectedly appears, determined to reveal the truth about the doctor.