Noémie, sept ans bientôt huit, passe beaucoup de temps avec sa voisine, Madame Lumbago, puisque ses parents sont très occupés à cause de leur travail. Monsieur Émile, le défunt mari de Madame Lumbago, lui avait un jour parlé d'un trésor caché dans son appartement, et depuis, la petite fille épluche chaque racoin pour résoudre ce fameux mystère. Se trouvant face à l'éventualité d'un échec, la petite Noémie, persévérante et téméraire, décide de dessiner un plan du logement de sa gardienne et demande l'aide de son ami Francis pour l'aider à fouiller toutes les pièces et percer le secret.
as Émile Lumbago
as François
as Noémie
as Femme sexy
as Madame Lumbago
as Jeanne
as Julie Tremblay
as Bank clerk
as Françis
as Vendeuse
as Émile Lumbago - 22 years old
as Louise (Uncredited)
as Madame Cynthia
as Micheline
as Agent #1
as Agent #2
as Monsieur Bellemare
as Chic restaurant waiter
as Bank teller
as Locksmith
as Bank guard
as Hospital receptionist
as Brother of Francis - 13 years old
as Brother of Francis - 10 years old
as Sister of Francis
as Intensive Care Nurse
as Passer #2
as Shaved-headed type
as Man with umbrella
as Bank customer
as Guardian-1967
as Jean-3 years old
as Mrs. Lumbago - 20 years old
as Woman at the bedside
as Elderly man in intensive care
as Roommate
as Mother of Francis
as Conspiring Salesman #1
as Conspiring Salesman #2
as Stunt Coordinator
as Stunt Coordinator/Micheline's Double
as Stunt Coordinator
as Stunt Coordinator
as Jeanne stunt double
as Stunt driver
as Angry Client (Uncredited)
