I don't speak French, so I can't say much about the audio for this movie. But it does seem to be a fairly straightforward documentary on the nudist lifestyle. There are shots of all ages and shapes of people going about normal daily activities without clothing. There are lots of interviews with men and women, too; they appear to be explaining the appeal of the nudist lifestyle, without attaching any sexual context to it.
At the same time, there are a few examples of sensuality in the film. The biggest one is near the end of the film. A very young, very beautiful early teenage girl is standing calf-deep in a river. The camera very, very slowly pans up her body, from her legs to her face. In another, earlier scene, two older teenage girls are laying in the grass. Again, the camera slowly pans across from their legs to their faces. The one girl is looking at the camera with what can only be called a seductive look on her face. In other shots, the camera starts with a view of men's privates, pauses, and then pulls back.
So, while the film is almost exclusively innocent, there are a few instances where they seem to be pandering to a voyeuristic audience.
