Han Xuanji was originally a monk with mediocre talents. In order to seize his life elixir, his childhood sweetheart Liu Ruyan designed to regret his marriage and ruin his reputation. When he was heartbroken, Han Xuanji accidentally activated the sign-in system and obtained the gift of immortality. He worshiped at Lingxiu Peak, relied on signing in to continuously obtain heavenly materials, earthly treasures and ancient inheritance, and his cultivation progressed by leaps and bounds. When his former enemy Bai Zongming came to provoke him, Han Xuanji forcefully slapped him in the face. After that, he sang all the way, killing the invading demons to protect the sect, and finally succeeded in sealing the demons, overcoming the tribulation and ascending to the upper world, starting a new legend.
