Doctor Who: Survival

Trying to work out why people have been disappearing from Perivale, Ace is cornered by a Cheetah-Person on a horse called Kara, who transports her to a far-off planet.

The Doctor and a number of people from Perivale follow Ace to the Cheetah-People’s world, where the Master lies in wait. He cannot leave without the Doctor's assistance.

As the alien world dies around them, the Doctor and the Master fight like animals before escaping to Earth, where their war ends. And somewhere else, the tea is getting cold.