Two warriors from opposing nations are united by a vow of master and servant. Taki Reizen, an exquisitely handsome commander, bears his country's destiny on his shoulders. Nicknamed 'Mad Dog' for his fierce nature, Klaus has pledged fealty to him as a knight. Yet those nearby remain distant and critical, brimming with doubts. Despite their sincere emotions, what will become of a love forged harshly by wartime brutality in the shadows of endless conflict and sorrow?