"...
Planets come and go. Stars perish. Matter disperses
coalesces, forms into other patterns, other worlds
Nothing can be eternal..."
STORY PLOTLINE
The TARDIS is drawn to a space station where the Doctor is subjected to a Time Lord inquiry into his behaviour, presided over by an Inquisitor.
The prosecuting counsel, the Valeyard, presents the first piece of his evidence, which consists of a recording played back on a screen linked to the Matrix. It concerns a visit by the Doctor and Peri to the desolate planet Ravolox, which turns out to be a future Earth, shifted light-years theough space.
DVD EXTRAS
Commentary: Colin Baker, Nicola Bryant, Tony Selby, Adam Blackwood, and (Part One only) Eric Saward
