King Arthur has never had a fixed biography: chroniclers, poets, and filmmakers keep reshaping him to fit their own centuries. This film follows historians and Arthurian scholars as they trace the legend back toward its possible roots in post-Roman Britain, sorting through the scraps of early record that may or may not point to a real war leader behind the name. It tracks how the story grew in the telling, from medieval chronicles and romance literature that gave Arthur his knights, his sword, and his court at Camelot, through to the modern films and television series that keep reinventing him for new audiences. Rather than settling on one origin, the film treats the search itself as the subject, weighing competing historical claims against the mythology that grew up around them. What holds the film together is that persistence: a story with no confirmed source that has stayed in circulation for over a thousand years.