The story begins with the capping of Jack, one of Will Parker's friends. Will's community looks to be living in the 1800s as there are no machines or electrical devices, although Tripods are commonplace. In preparing for the capping of Jack, Will and Henry deliver food to vagrants which are people whose capping didn't go well. Living among them is Ozymandias who reveals to Will the secret of the White Mountains where men live free. Jack is capped, and returns to the village as a controlled mind. Will and Henry start their voyage to the White Mountains.
Will and Beanpole pretend to be clowns in Ali Pasha´s circus. Their goal now is to get back to the White Mountains and tell the free men about what the Masters are going to do to Earth. They are doublecrossed by Ali, though, who intends to give them all to the Tripods to finally receive their capping.
A look at cult sci-fi series. It took producer Richard Bates 15 years to get John Christopher's trilogy The Tripods on to our screens. Then, when he did, he only got to make two-thirds of the story. But despite it never being finished or repeated, its popularity has sustained. Including interviews with cast and crew, the programme reveals how the casting of the three leads turned into something close to X Factor, and how a piece of BBC weather department technology changed the approach to SFX.