Rescued as a child with a sentient android by a fearsome captain and the crew she now calls family, a seventeen-year-old scoundrel and outlaw must find a lost ship in order to repair her malfunctioning metal friend. Things get messy when an upper class boy beats her to her prize, messier still when prophecy becomes destiny.

Helen A, the ruler of Terra Alpha, is determined that everyone on the planet will be happy – or else. She uses the Happiness Patrol to enforce happiness and there is an ever-present “lift music” track playing over the loudspeakers throughout the city to give a sense of happiness.

The Doctor is on trial, again. Brought before the Time Lords to account for his actions, he is accused of endangering the entire universe. The sentence, if found guilt, is to be wiped from existence. The Time Lords give the Doctor the chance to tell his story. And so it begins…

A hotshot pilot, an identity thief, an outsider, and a spy. These four Academy cadets must put aside their differences if they are to defend their world from a cunning foe.

The Doctor and Jo are at Stangmoor Prison to witness hardened criminal George Barnham undergo the Keller Process, which, according to Professor Kettering, extracts the negative impulses from the mind and leaves a well-balanced person. Things start to go wrong when healthy man is found dead of heart failure and had what looked like tiny claw marks on his face after Barnham’s procedure, which left Barnham with a child-like demeanor.