Taki Reizen and Klaus, otherwise known as "Mad Dog," are two warriors hailing from different nations who are entangled in a pact of servitude. Despite Klaus's rough exterior, he pledges his loyalty to Taki, who holds an extraordinary physical presence and commands the fate of his people. Nevertheless, their bond is met with disapproval and mistrust from those around them. As the threat of war looms over their heads, will their love be able to endure the inevitable hardship?