Todd Stanton travels to Joshua Tree, California, every year to hunt for the Empire Lights, a mysterious UFO phenomenon captured on film by his wife. After five summers he has become cynical about the project.
Just at the moment he is about to quit, he meets Margot, the manager of the dusty motel where he's been staying. Margot has been stuck in Joshua Tree her whole life and wants nothing more than to get away.
Together they go on a hunt for The Empire Lights, and in the end discover everything they've been searching for.