Forensic geologist Scott Wolter embarks on a quest to uncover the truth behind the Viking presence in North America. By examining ancient runestones and analyzing geological evidence, Wolter challenges the established historical narrative, suggesting that the Vikings traveled much further south than previously believed, potentially reaching the United States. His journey takes him to various sites, including the Heavener Runestone in Oklahoma and the mysterious Nomans Land Island, where he seeks to connect the dots and prove that the Vikings left behind a trail of clues that could rewrite American history.