Two activists take on McDonald's in the longest trial in English history. McLibel is the inside story of how a single father and a part-time bar worker took on the McDonald's Corporation. Filmed over three years, the documentary follows Helen Steel and Dave Morris as they are transformed from anonymous campaigners against the fast food giant into unlikely global heroes. Struggling to defend themselves in the longest trial in English history, the pair face infiltration by spies, secret meetings with corporate executives, 40,000 pages of background reading and a visit from Ronald McDonald. Using interviews with witnesses and reconstructions of key moments in court, the film examines the main issues of the trial - nutrition, animals, advertising, employment, the environment - and the implications for freedom of speech.