Their childhood meeting planted the seeds of love in both boys' hearts. When they grew up, their changed positions left their feelings in an impossible bind. One was the future heir to the Celestial Realm, while the other was the cold-faced Demon King of the Yaoguai Realm. With such a gulf between their status, what future could their love have? Meanwhile, the Three Realms faced an enormous crisis. Wuji, the Demon King of the Demon Domain, sent a fragment of his spirit into the mortal world to feed on the greed, anger, and delusion of the Three Realms. If his true form broke free of the Demon Domain, chaos would engulf all three realms. Only the five-colored stones Nuwa used to mend the heavens could seal him away, but they had been scattered, transformed into five stones representing metal, wood, water, fire, and earth, and dispersed in every direction. Li Zelin, imperial grandson and heir, and Jiang Heng, the Demon King, set out with their close friends on a journey to save the people of the world. As they traveled, their feelings for each other deepened without their realizing it. This is the story of how they overcame countless hardships and found happiness together.