Space Mountain at Disneyland Paris, and the team led by designer Tim Delaney who spent years turning Jules Verne's novel "From the Earth to the Moon" into a working ride, is the subject here. The film follows the project from early concept sketches through construction, mechanical testing, and the fine-tuning of the launch sequence, with engineers and designers explaining the compromises between Verne's Victorian imagery and what a roller coaster mechanism can actually do. It traces Verne's own history along the way, including "Paris in the 20th Century," a prophetic manuscript about electric lights and traffic-choked streets that his publisher rejected in 1863 as too bleak, which pushed him toward the more optimistic space story that became the ride's source material. Space Mountain itself sits about 40 miles outside Paris, and the film treats its opening as the closing of a loop: a nineteenth-century fantasy of lunar travel built in steel and track a century later. Behind-the-scenes access to the construction crews and ride engineers carries most of the story.