No, in my room

A parallel history is being written under the nose and out of control of the director. The all-mighty filmmaker yells cut, yet as an act of defiance one camera keeps rolling, capturing what the spectator shouldn't see, candidly documenting what history leaves out. But even then, someone's holding the camera, someone's editing the shots, someone's splicing titles with dates and places over the frame. What happens when the camera simply takes over?