The Doctor, in a previously forgotten regeneration, has been sent on a mission by the clandestine Time Lord agency known as Division. Partnered with an eager new recruit, Taslo, she must eliminate a terrorist organization intent on destroying the Time Lords. However, upon arrival at their home planet, they are greeted by a seemingly peaceful tribe... BBC logo © BBC 1996. Doctor Who logo and insignia © BBC 2018. Thirteenth Doctor images © BBC Worldwide 2018. Licensed by BBC Worldwide Limited.