Tomorrowland began as a single-day gathering in Boom, Belgium, and by 2014 had grown into the world's largest electronic dance music festival, drawing hundreds of thousands to its stages for one weekend a year. This film follows the buildup to that tenth anniversary edition and the event itself, mixing full-scale performance footage with backstage interviews from the DJs who built the festival's reputation, including Armin van Buuren, Paul van Dyk, Moby, David Guetta, Afrojack, and Steve Aoki. The camera moves between the stage design and pyrotechnics that define Tomorrowland's look and the quieter moments before sets, where the performers talk about what the festival means to them and to the fans who return year after year. The film treats the crowd itself as part of the story, tracking the costumes, the sing-alongs, and the sheer scale of a site built from scratch in a Belgian field and torn down again days later.