The immortal Mu Sheng fell into a dream after drinking, and accidentally met Chang Yuan, an orphan of the dragon clan who was imprisoned in the ruins of Wan Tian. The two signed a master-servant contract. The emperor Lan Xiao discovered Chang Yuan and wanted to draw his sword to kill the dragon in order to maintain the order of heaven and earth. In order to protect Chang Yuan, Mu Sheng reincarnated as an orphan girl Er Sheng, and Chang Yuan also went down to the world to find Mu Sheng's whereabouts. The two killed the Gu King, worshipped the immortal mountain, made friends, and experienced the taste of the world. In order to save Chang Yuan's life, Er Sheng was forced to become a demon. In order to save Er Sheng's life, Chang Yuan voluntarily returned to the forbidden land and lived in loneliness forever, in exchange for Er Sheng to return to heaven and become a carefree immortal. The sleeping Mu Sheng finally woke up, but completely forgot his experience in the world. When she was about to get married to the Emperor of Heaven, she found traces of the Emperor extracting her memory, so she used clues to escape the marriage and go down to the lower world to seek the truth. She later rescued Chang Yuan, and the two of them also deeply realized the truth and mission of equality of all beings and God's love for all. In the end, everyone worked together to successfully suppress the evil god who wanted to cause chaos in the three realms and clear up the world. Mu Sheng and Chang Yuan also understood the responsibilities they should bear more, and from then on they lived a peaceful life as a couple. (Source: Chinese = Weibo || Translation = MyDramaList) ~~ Adapted from the novel "Si Ming" (司命) by Jiu Lu Fei Xiang (九鷺非香).