Coming out from jail, Lucas has decided to change his life and behave like a good citizen. But when he is taken hostage in a bank by a hare-brained robber, no cops can believe he is not part of the action.

Pierre Richard
as François Pignon

Gérard Depardieu
as Jean Lucas

Jean Carmet
as Docteur Martin, vétérinaire

Maurice Barrier
as Superintendent Duroc

Jean Benguigui
as Labib, chef de bar

Roland Blanche
as Idriss, l'homme de main de Labib

Anaïs Bret
as Jeanne

Philippe Lelièvre
as Adjoint de Duroc

Yveline Ailhaud
as Femme-flic

Didier Pain
as Maître-chien