Japan, 1594. In an effort to hold his chief rival in check, the shogun entrusts his loyal vassal, Lord Matsunoki with a plan to construct a new castle. The castle of dawn is not just any castle though, but one to be built in a traditional European style. Will Lord Matsunoki succeed in building his life's work? Or will the spies, traitors, and saboteurs that oppose him bring the whole thing crashing down on top of him?