The young orphan Ruoshuo disguises herself as a boy and becomes a disciple of Wenren Changyu, an immortal of the Dao. After seven years together as master and disciple, Ruoshuo secretly falls for him, and even the austere, desireless immortal begins to feel the same. But just as Ruoshuo is discovering love, her aunt from the demon realm comes looking for her, intent on taking her back to claim the throne of the Demon King and restore the demon realm so it can stand against the Celestial Court. Ruoshuo refuses. When she returns to the immortal temple, she discovers that Wenren Changyu has already left. She follows him all the way to the heavens, only to learn that the immortal is the celestial god of war, charged with keeping one corner of the realm at peace. Through the schemes of those with ulterior motives, Ruoshuo learns the truth about their past. They are on opposite sides, and the one she loves has become her enemy. Wenren Changyu suddenly turns on her, casts her from the celestial platform, and personally severs the bond between them. They face each other as adversaries, neither willing to yield. But why, when Ruoshuo is in danger, does Wenren Changyu scatter all his immortal bones to save her? They love each other. What does it matter whether they are demon or immortal? She has always been the girl Wenren Changyu holds dearest, Ruoshuo, and that has never changed.