A hapless orchestra player becomes an unwitting pawn of rival factions within the French secret service after he is chosen as a decoy by being identified as a super secret agent.

François Perrin

Colonel Bernard Milan

Colonel Louis Toulouse

Christine

Perrache

Maurice Lefebvre, Perrin's best friend

Paulette Lefebvre

Chaperon, Toulouse agent

Coco, fake delivery man

Georghiu, Milan agent