The soul of college student Lin Chen traveled through the Canglan Realm, the young master of the Lin family, and awakened the "Wanjie Upgrade System" to fight against the enemies of the genocide, but found that he and Wang Qi, the leader of the Xuanyin Sect, were the twin hosts of the same soul. With the bloodline of Fentian, he and his white fox bloodline fiancée Su Qinghe use modern knowledge to solve the dilemma of cultivation, traveling through thousands of worlds such as steampunk and cyberspace, and uncovering the truth of the system as the "Library of All Realms" - it turns out that he is the "Book Spirit" who repairs the loopholes in the world, and she is the "Book Soul" that connects reality and fiction. When technological formulas are integrated into sword techniques, and when data viruses collide with the forbidden arts of cultivation, in the game of light and shadow, the two must not only destroy the resurrection conspiracy of the ancient demonic cultivators, but also protect each other across dimensions, and finally uncover the mystery of creation and destruction hidden in the forbidden book section of the library.
