Ko Sho Blo! Trigger-happy space police the Judoon are targeting 21st-century Gloucester. The Doctor, Yaz, Ryan and Graham race back to Earth in order to prevent them doing too much damage to the cathedral city. But who are they looking for, and what did they do to incur the wrath of the Judoon?

The Cybermen are on the march. The last remaining humans are hunted down. Lies are exposed, truths are revealed, and for the Doctor nothing will ever be the same.

'Time is beginning to run wild.' On a planet that shouldn’t exist, in the aftermath of apocalypse, the Doctor, Dan, Yaz and Vinder face a battle to survive.