Christopher Columbus gets the credit, but this film lays out the case that others reached the Americas long before 1492. It moves through the rival claims, Norse sagas placing Leif Erikson in Vinland, medieval accounts of Irish and Welsh voyagers, and archaeological finds that skeptics and believers argue over just as hard as the historians do. Rather than settling on one hero, the film treats the question as a puzzle with competing pieces of evidence, weighing sagas against soil samples and old maps against wishful reading. Historians and researchers walk through what a genuine pre-Columbian landing would need to look like in the archaeological record, and where the popular theories fall short of that bar. The film's real interest is in how national myths get built around "first," and what happens to a country's origin story when the discovery date gets pushed back by centuries. It ends without a single winner, only a stronger sense of how contested the Atlantic crossing really is.