In 1274, after subduing nearly the entire known realm, the Mongols set their sights on Japan; their initial move toward a comprehensive invasion begins with Tsushima Island. The Kamakura Shogunate dispatches Kuchii Jinzaburou and a band of exiles to the isle at Princess Teruhi"s behest, where they confront daunting challenges and Tsushima"s destiny hangs in the balance. Amid relentless storms and fierce resistance from local samurai, the mission's peril grows today.