Watch at FMovies. Cuban filmmaker Enrique "Kiki" Álvarez's newest feature paints a slow-burning love story set in the years immediately following the Cuban Revolution in January of 1959. The Black Box is a secret diary written by Elsa and read by her granddaughter several decades later, a film about a young woman who finds and reads the experiential, emotional and political legacy that her grandmother has left hidden like a magical object. Featuring rare footage from the beginning of the Cuban Revolution.