Chang'an horseman Li Changan accidentally activates the "Journey to the West Sign-in System". By signing in at various places in the city every day, he can obtain Journey to the West magic weapons (such as golden hoop fragments, purple gold gourds), skills (such as Bima Wen's horsemanship, Guanyin's Heart-clearing Curse) or practice resources. At the beginning, he signed in to rescue the teahouse proprietress Su Hongxiu who was in trouble, but was involved in the chaos of urban evil spirits (wandering spirits, pig demons, and spider spirits). Later, he met the reincarnated Sha Monk, White Dragon Horse and other former Westward Journey members, and gradually uncovered the conspiracy of the "Remnant of the Westward Journey" (the Bull Demon King) to try to overthrow Chang'an. The protagonist counterattacks by signing in, growing from a low-level groom to a golden immortal-level "city guardian", and finally subdues the Bull Demon King and protects Chang'an into a paradise on earth.
