I looked at the film briefly, but from what I realized, it's about a young American (Michael Pitt) who comes to France and meets two young Frenchmen (Eva Green and Louis Garrel).
Then they live some time together in a common apartment, so you know what young people can do. Well, I would not recommend it to children the movie has some scenes that can "excite" them.
Forgive me for the Nubian explanation, I know that he can give you a wrong opinion about the film, but I will still see the goal. Now I just explained this to you without a point. However, I'm sure IF you take a little time, at least look at it, you will change your mind and you will want to look at it.