In the present day, Pierre Lamontagne (Lothaire Bluteau) searches for his estranged brother Marc (Patrick Goyette) to help unravel a family mystery.

The mystery itself unfolds in flashbacks set against the backdrop of Alfred Hitchcock's 1952 filming of I Confess in the city.

[3] The cast also includes Ron Burrage as Hitchcock, Kristin Scott Thomas as his assistant, and Jean-Louis Millette as Raymond Massicotte, Marc's lover who also holds the key to unlocking the Lamontagne family's secrets.

The city is transitioning into the modern era due to the advent of television and its initial exposure to Hollywood.

The brothers embark on a quest to discover Marc’s biological father, initially believed to be a parish priest.