Dark Gallifrey: Missy Part 1 (3.1)

Great events ripple across time. Causing catastrophes and breaches in the fabric of reality. Soon, because of Dark Gallifrey, the renegade Time Lord known as Missy will be able to achieve the impossible...

On a remote and isolated planet, where technology cannot progress beyond steam-power, two thieves are on the run.

Hunted and trapped by automaton policemen, they look certain to hang for their crimes...

...until Missy drops into their world. Their lives are about to change forever, as is the fate of their entire planet...