The Fire God and second son of Heavenly Emperor—Xufeng—was ambushed and trespassed to the Reflection Space in the Flower Realm. Suffering from injuries, he was rescued and treated by the clumsy Jinmi. Jinmi was then brought back to the Heavens by Xufeng, without realizing Xufeng’s true identity. Over a hundred years had passed, Xufeng had developed feelings for Jinmi—so did the Night God, Runyu. Runyu then used Jinmi as Xufeng’s weakness to threaten Xufeng’s position as the Crown Prince amidst the chaos caused by the war at the Demon Realm. At the very boundary between the Heavens and Demon Realm—River of Oblivion—was where both of the princes suffered the greatest loss of their lives. He achieved Nirvana and met a Grape Sprite. Is she actually a Grape Sprite? Juggling romance and the burden he shoulders, will this couple have a happy ending? How does one…quantify love?