After the entire class time-traveled to Journey to the West and returned to Blue Star a hundred years later, everyone cultivated into Qi Refining and Foundation Establishment, except for Li Changsheng who remains a mortal without any cultivation. Nobody knows that although he did not achieve immortality, he became close friends with deities and Buddhas such as Sun Wukong, Erlang Shen, and Nezha. As a mysterious kalpa invades Blue Star, Li Changsheng joins forces with 749 Captain Lu Li to investigate the truth and discovers that his mortal bone can actually restrain the pollution. From borrowing the power of deities and Buddhas to personally practicing the Nine Turn Mysterious Art, he finally crosses both realms to protect his family and old friends across the skies.