Chronicling the major events in the American/Soviet space race, starting from the first hypersonic rocket planes through the development of human space flight, culminating with the mission by mission history of Projects Mercury, Gemini and Apollo. The series features interviews with X-15 pilots, astronauts, flight controllers, authors, and broadcasters, among others. While focusing mainly on the American side of the race, the series also covered major Soviet achievements through every key phase of the 1950s and 60s Space Race.