The Doctor lands on the remote planet Messaline where an age-old war is raging on. In the middle of all the chaos he meets Jenny, who turns out to be the most important woman of his life.

As General Cobb threatens genocide and Martha is kidnapped by the Hath, the Doctor has a real fight on his hands. But he’s soon faced with an even bigger battle – to try and make peace with Jenny, his own daughter…

Guest starring Georgia Moffett, the real-life daughter of the fifth doctor, actor Peter Davison.