The Doctor and Dodo arrive in London in swinging 1966, only to discover a plot to use the computer WOTAN (housed in the Post Office Tower) to take over the world. When Dodo is hypnotised along with WOTAN's controller Professor Brett, the Doctor finds help in the form of Polly, Brett's secretary, and Able Seaman Ben Jackson. Together they must defeat WOTAN's terrifying War Machines. This release includes restored footage unseen since 1966, a clip from 'Blue Peter' in the same year with the public unveiling of a War Machine and a feature on how the story was put back together from the source material.

A children's classic double bill. An adaptation of E. Nesbit's children's classic, 'The Railway Children' follows the fortunes of a group of Edwardian children whose father is wrongly jailed for treason. Exiled with their mother to a life of genteel poverty on the Yorkshire Moors, they are soon drawn to the railway at the bottom of the garden, and all kinds of adventures. 'Swallows and Amazons' is a classic children's adventure yarn based on the Arthur Ransome book. The story recounts the adventures of a group of children who call themselves the Swallows, after their boat, as they holiday in the Lake District during the 1920s. There, they meet two piratical sisters, known as the Amazons, who have already claimed the waters for themselves.