When we last left Clara and the Doctor, Clara was demanding an adventure. Apparently that adventure is going to be be in time along our own plot from the last couple of season,s and she and the Doctor travel back to just after the Doctor Who 50th Anniversary special.
The synopsis, and the BBC TV trailer, below.
The Zygons, a race of shapeshifting aliens, have been living in secret among us on Earth, unknown and unseen – until now!
When Osgood is kidnapped by a rogue gang of Zygons, the Doctor, Clara and UNIT must scatter across the world in a bid to set her free. But will they reach her in time, and can they stop an uprising before it’s too late?
And here’s the synopsis for Part Two: The Zygon Inversion.
Shapeshifting Zygons are everywhere in the UK, and there is no way of knowing who to trust. With UNIT neutralised, only the Doctor stands in their way. But how do you stop a war? And what can the Doctor do to save his friends?