In the high-stakes arena of imperial politics, the seemingly untamable Crown Prince is known for his ruthless nature and feral arrogance. Yet, nobody expects that his entire existence is secretly brought to heel by a single noblewoman. The Princess Young-Ae holds the ultimate leverage—the leash that controls the empire's future ruler. What begins as a dangerous game of political manipulation and shifting power dynamics soon spirals into a suffocating, intense romance where authority, submission, and absolute devotion blur the lines of their relationship.