One of the most popular history-based characters is back when Magistrate Saemonojo Toyama no Kinsan investigates the tragic shipwreck of the 'Sadomaru' near Cape Kasumigaseki. The ship carrying gold bars from Sado Island to Edo for the shogunate disappeared into the ocean on a day with clear skies and no wind. While it is conveniently blamed on a surprise tornado or whirlwind, the Sado Magistrate asks his lifelong friend Magistrate Toyama to get to the root of the mystery in order to save his reputation and avoid a life of shame.