"What is crazy is that the film that, three years ago, was a science fiction film, very quickly it becomes almost a period film," says Louis Garrel.

"What is crazy is that the film that, three years ago, was a science fiction film, very quickly it becomes almost a period film," says Louis Garrel.

Louis Garrel: “I know nothing about ecology

The actor-director has shot a whimsical, eco-friendly fable, “The Crusade,” where he and his wife Laetitia Casta play a couple. “A comic film because it is optimistic,” he says.