When Xiao Mu, the ninth son of the Emperor of Heaven, went down to earth to undergo calamity, he met Qingshan, a woman transformed from Lingxuhua. They fell in love with each other in the mortal world, but both of them forgot about it after returning to heaven. His friend Huafeng accidentally rescued Qingshan and renamed him Yunyue, but was kidnapped by the Wu clan. Xiao Mu recovered his memory and searched hard, but unexpectedly, his second brother Qi Sheng, who hated him for becoming the prince, also fell in love with Yunyue, but in the end he was controlled by his inner demon. Xiao Mu and Yunyue went around in circles, missing each other hard. Huafeng also slowly fell in love with Xiao Mu's horse Fengli, and the group went through hardships...