In 1581, the monk Seo-san predicts that the Japanese are planning an invasion of Korea. He goes to the king, suggesting that the kingdom build a stronger army, but he is thrown out of court. He begins training three pupils in martial arts, but rumors reach the king that Seo-san is training an army....
After one of the raids into the ancient kingdom of Koryo by Mongolian bandits, Yu-seong finds himself alive, but orphaned. He sets off to Mongolia to rescue is fiance who was kidnapped in the raid by the leader of the bandits
