The story of a big party during which Jacques Tati brings together audience members, performers, clowns, children, and himself.
| Actor | Role |
|---|---|
 Jacques TatiMonsieur Loyal | Monsieur Loyal |
| MMichèle BraboElle-même | Elle-même |
| KKarl KossmayerLui-même | Lui-même |
| PPierre BramaLui-même | Lui-même |
 Pia ColomboElle-même | Elle-même |
| JJohnny LonnLui-même | Lui-même |
| JJan SwahnCircus performer | Circus performer |
 Bertil BerglundCircus performer | Circus performer |
 Moniqa SunnerbergCircus performer | Circus performer |
 Dominique Lavanant(uncredited) | (uncredited) |
 Michael ManssonFlamenco Dancer (uncredited) | Flamenco Dancer (uncredited) |
 Jan NygrenCircus Manager (voice) (uncredited) | Circus Manager (voice) (uncredited) |
 Janne SchafferGuitar Player (uncredited) | Guitar Player (uncredited) |
 Janne 'Loffe' CarlssonDrummer (uncredited) | Drummer (uncredited) |