Luo Yu, the daughter of Luo Zhong, the mountain god of Wushan Mountain, is a mountain charm. She has a lively and cheerful personality, is kind-hearted and loves to fight against injustices. Her coming-of-age ceremony is to marry her younger sister Luo Yun and her senior brother Nan Feng. When she goes down the mountain, she meets the second prince Liu Rui by chance, and is rescued by him, secretly falling in love with her. Liu Rui, the illegitimate son of the Dragon Palace Princess and the Emperor of the Mortal Realm, revives the Dragon Clan for his mother. On the surface, he is ruthless, but in fact he is gentle and reliable. In order to find the whereabouts of his biological mother, Luo Yu traveled around the world and met Liu Rui again, and they stayed together day and night. The two had a deep love for each other. However, Luo Yu, who loved Liu Rui deeply, was plotted by Hong Yu, who channeled Gui Li to stage a wedding drama. Coupled with the deaths of Qing'er and Nan Feng, Luo Yu almost despaired, and the sisters turned against each other...