Paul Martin and François Leroux are brothers-in-law and comics without fame. One day, the famous television comics, Gaëtan, finds himself in the little theater where Paul and François produce themselves under the name of "Gagsters".
| Actor | Role |
|---|---|
 Michel SerraultGaëtan / Robert Wellson | Gaëtan / Robert Wellson |
 Thierry LhermitteFrançois Leroux | François Leroux |
 Gérard JugnotPaul Martin | Paul Martin |
 Macha MérilJacqueline | Jacqueline |
 Mathilda MayAlexandra | Alexandra |
 Didier KaminkaRené | René |
 ColucheGeorges | Georges |
 Maurice BaquetRobert | Robert |
 Pierre DorisJean | Jean |
 Daniel LalouxTheater director | Theater director |
 Georges BellerTV director | TV director |
| BBernard BijaouiJamaican tavern boss | Jamaican tavern boss |
 Pierre TcherniaPresenter of the Césars | Presenter of the Césars |
| MMuriel DubruleThe last woman | The last woman |
 Carole JacquinotCatherine | Catherine |
 François DyrekGrocer | Grocer |
 Pierre RichardIn person at the César Awards ceremony (uncredited) | In person at the César Awards ceremony (uncredited) |
 Philippe NoiretIn person at the César Awards ceremony (uncredited) | In person at the César Awards ceremony (uncredited) |