Ziwu City is different from other cities. It is located on the line of ghosts and gods, which connects Yin and Yang and spans heaven and earth. Humans, monsters and ghosts often hang out here. There lives a hexagram master named Nian Yi. People who paid a lot of money to beg her for a fortune lined up outside the city. No one knows her origins, but she has the ability to bring people back to life.
In order to find Nian Yi, Ning An did not hesitate to use the forbidden technique to break through the barrier that imprisoned him, and lost a ray of his soul in order to do so. He has the ability to cover the sky with one hand, but he never asks about things that have nothing to do with her. It took Ning'an several lifetimes for nearly a thousand years to get Nianyi back, but she had forgotten her past. Ning An thought this was a good idea, so he placed her in Ziwu City and guarded her for the rest of her life.
Until one day, the arrival of an uninvited guest broke the peace of Ziwu City.
