The story of a big party during which Jacques Tati brings together audience members, performers, clowns, children, and himself.

Jacques Tati
as Monsieur Loyal

Michèle Brabo
as Elle-même

Karl Kossmayer
as Lui-même

Pierre Brama
as Lui-même

Pia Colombo
as Elle-même

Johnny Lonn
as Lui-même

Jan Swahn
as Circus performer

Bertil Berglund
as Circus performer

Moniqa Sunnerberg
as Circus performer

Dominique Lavanant
as (uncredited)