Li Xuan, the immortal keeper who has lived for thousands of years, is an alien that even heaven cannot spy on. He hides in the city and works as an antique shop owner to stabilize the yin and yang of the three realms. However, at his grandmother's funeral, he sees through the fate of young Chen Yu Zhiyang Zaidao at a glance. The funny, cowardly and courageous Daochang Zhao accidentally fell into the cause and effect, and Li Xuan guided the young man through the world and experienced tribulations, growing from a novice in metaphysics to a new guardian. When the turmoil in the Three Realms strikes, can the young man shoulder his mission and continue to write the legend of balance beyond the realm of heaven?
