On the occasion of the fortieth anniversary of the death of Louis de Funès, this documentary by Jacques Pessis pays tribute to the cult actor by retracing his career through excerpts of his greatest successes in the cinema and in the music hall, never-before-seen archives, as well as testimonies from personalities and relatives.

When the silent cinema learned to speak, the audience was surprised not only by the voices of the actors and the sound effects, but also by a new element, the music, which, combined with the dance and an unprejudiced imagination, gave rise to a new genre, as important to Hollywood cinema as the western was: the musical. A journey through the history of this genre, from its beginnings to the present day.