The Master Key (French: Grande Ourse, la clé des possibles) is a Canadian fantasy/mystery film, directed by Patrice Sauvé and released in 2009.
[1] A continuation of his earlier television series Grande Ourse and L’Héritière de Grande Ourse, the film stars Marc Messier as Louis-Bernard Lapointe, a wizard who is seeking to rescue his friend Émile (Normand Daneau).
To succeed, he must enter a labyrinth and solve a complex puzzle in order to locate the master key to all parallel universes, within just twelve hours.
[1] The film's cast also includes Fanny Mallette, Maude Guérin, Gabrielle Lazure, Monique Mercure, Marie Tifo, Evelyne Brochu and Anne Dorval.
[3] It won the Genie Awards for Best Original Score (Normand Corbeil) and Best Make-Up (Djina Caron and André Duval).