The Happiness Patrol ( TV story ) The Happiness Patrol was the second story in the twenty - fifth season of " Doctor Who " . It was intended ( by the writers ) to be a parody of , with Helen A representing Margaret Thatcher herself . ( DOC : " Happiness Will Prevail " ) Synopsis . The TARDIS arrives on the planet Terra Alpha , where the Seventh Doctor and Ace discover a society in which sadness is against the law - a law enforced zealously by the brightly uniformed Happiness Patrol . The planet is ruled by Helen A with the aid of her companion , Joseph C , and her carnivorous pet Stigorax , Fifi . The penalty for those found guilty of unhappiness is death in a stream of molten candy prepared by Helen A ' s executioners , the robotic Kandy Man and his associate , Gilbert M . The time travellers help foment rebellion amongst the downtrodden population and the subterranean Pipe People — the planet ' s original inhabitants — and Helen A is overthrown . Joseph C and Gilbert M escape in a shuttle , while the Kandy Man is destroyed and Fifi killed . Helen A finally realises the hard way that happiness is nothing without the contrast of sadness . Plot . Having heard rumours of untoward happenings , the Seventh Doctor and Ace visit a human colony on the planet Terra Alpha , where they find unhappiness is an illegal act . In a perverse society ruled by the vicious and egotistical Helen A , the Happiness Patrol is a secret police force which hunts down killjoys and eliminates them . It also repaints the TARDIS pink as a colour more joyous than blue . The disappearances also worry Trevor Sigma , the official galactic censor . He is visiting Terra Alpha too , to discover where so many of the population have gone – 17 % at the most recent count . The Doctor and Ace have a brief incarceration to find out more about the society of Terra Alpha . They encounter unhappy guard Susan Q , who becomes a firm ally . They split up . The Doctor meets another visitor to the planet , Earl Sigma , a wandering harmonica player who stirs unrest by playing the blues . Earl and the Doctor venture to the Kandy Kitchen at the heart of the planet ' s government . They find rebels drowned in fondant surprise , the favoured method of execution of the Kandy Man - a grotesque , sweet - based equivalent of a robot , created by Gilbert M , one of Helen A ' s senior advisers . The Doctor and Earl affect an escape by the Doctor causing the Kandy Man to accidentally stick himself to the floor . They end up in the candy pipes below the colony , where dwell the native inhabitants of Terra Alpha , now known as Pipe People . They want to help overthrow the tyranny of Helen A . The Doctor returns to the surface and starts actively subverting the government system – supporting demonstrations in favour of unhappiness and stirring up the drones to revolt ; preventing snipers from removing malcontents ; and even challenging Helen A face - to - face to end the monstrosity of her government . Meanwhile , Ace and Susan Q have been scheduled to appear in the late show at the Forum , where the penalty for non - entertainment is death . When Ace says she supports the Killjoys she is gagged until at the waiting zone . The Doctor and Earl rescue them . The four head to Helen A ' s palace for a final showdown , while a revolution rages outside the palace walls . The first to be disposed of is Helen A ' s pet Stigorax , Fifi , a rat - dog creature she had used to hunt down the Pipe People . Fifi is crushed in the pipes below the city . Next , the Pipe People destroy the Kandy Man in a flow of his own fondant surprise . Gilbert M and Joseph C , the consort of the leader , use the disorder to slip away . Helen A tries to flee too , but is challenged by the Doctor about the true nature of happiness , which can only be understood if counter - balanced by sadness . This is a notion she understands only when confronted with the remains of Fifi . The revolution is complete and the Doctor and Ace slip away – but only after the TARDIS has been repainted blue . Home video and audio releases . DVD Contents :