When the Doctor and Donna visit London’s Technology Museum for a glimpse into the future, things don’t go to plan.
The most brilliant IT brain in the country can’t use her computer. More worrying, the exhibits are attacking the visitors, while outside, people seem to be losing control of the technology that runs their lives.
Is it all down to simple human stupidity, or is something more sinister going on?
Beneath the streets, the Koggnossenti are waiting. For all of London to fall prey to technophobia...
"Technophobia has a clever twist I thought" says David Tennant. "Each of the stories has got a lovely central concept that's quite new, and very inventive and creative. That's always the things with these stories. They can sort of be.."
"A little bit generic?" asks Catherine Tate.
"Because the formula is 'baddie', 'Oooh, you're in danger', 'Oh it's all worked out alright!'"
"Yeah - 'we'll throw in some bafflegab at it and we'll be ok!'" David Tennant laughs. "But no, I think all three of these audio stories are very different, and unique, actually, which is nice."
David and Catherine didn't have much trouble slipping back in to the roles of the Tenth Doctor and Donna for the series...
"We had a little talk" Catherine says.
"Yeah, we had to go: 'What was it? How does it go again?" agrees David. "But it comes back quite quickly. I think it took us a couple of scenes maybe. Cos they start quite quickly. They don't hang around. We started the first day, ten o'clock, scene one - 'Go!' - and it did leave you going, 'What's the voice again? What was the jaunty tone?' - I think it's all come swimming back quite easily. Having a laugh - that seems to be the key".
The Tenth Doctor Adventures - three new Big Finish audio episodes starring David Tennant and Catherine Tate as the Doctor and Donna Noble will be released in May.
You can read the full interview with David Tennant and Catherine Tate in the latest issue of Doctor Who Magazine which is out now!