At the foot of the mist-shrouded cliffs, Zhaoming, princess of Jiang, takes pity on the dying general Jiang Sheng of an enemy kingdom and saves him. As they spend day after day recovering in the princess's residence, the battle-hardened general lets down his guard, and the princess, born to wealth and nobility, falls secretly in love with him. Yet their feelings cannot overcome the fated bond of being enemies from rival nations. Their parting words, “When we meet on the battlefield, show no mercy,” become a grim prophecy. He leads the Jing cavalry to break through Jiang's borders, while she stands on the city tower with her flute, eyes brimming with tears. Amid the clash of blades, can his hidden protectiveness and her unspoken devotion break through the barriers between their homelands and give this love, born across a sea of blood and hatred, a chance to survive?