A behind the scenes documentary/celebration, of the process of creating something new out of something tried and true like the movie musical, of the townspeople who were shaped for generations by four months of filming. It offers genuine insight into things that wouldn't be so well known otherwise, like how the English version of the film (shot at the same time) had to change some of the puns and they lost their meaning. Moreover, it is also about the way Agnes Varda captures on film the little moments of her darling late husband, as he puts on a sweater or smiles or acts so calm as he directs Gene friggin Kelly. It's more than clear how much she loved him and how pure an artist he seemed to be (it isn't said so directly but his loss as well as costar Francoise is felt through the film). It is about what the memories of happiness can do for people, for the loved and those who love, and how that makes happiness (as Varda says at the end).