Over the course of a single day, Monsieur Oscar travels by limousine around Paris to a series of nine appointments, transforming into new characters at each stop. He is a captain of industry, a gypsy beggar, a digitized ninja warrior (and reptilian sex god!), a gibberish-spewing troglodyte, the melancholy father of a teenage daughter, a shadowy assassin, a dying old man, and a thwarted lover reuniting with a past flame.