One day in 1986, François Mitterrand forgets his black felt (his initials) in a Lyons restaurant. Daniel Mercier, a young executive who has just been reprimanded by his superior, who judges that the computerization of its business plan is stupid, steals it to clear his head. It was then that his life is turned upside down.
| Actor | Role |
|---|---|
 Frédéric DiefenthalDaniel Mercier | Daniel Mercier |
 Frédérique BelFanny Marquant | Fanny Marquant |
 Marie-Armelle DeguyCharlotte Lavallière | Charlotte Lavallière |
 Roland GiraudPierre Aslan | Pierre Aslan |
 Gaëlle BonaVéronique Mercier | Véronique Mercier |
 Laurent ClaretFrançois Mitterrand | François Mitterrand |
 Anne JacqueminEsther Kerwitcz | Esther Kerwitcz |
 Michel LeebBernard Lavallière | Bernard Lavallière |
 Jacques BoudetPrésident Desmoines | Président Desmoines |