From the poor countryside, you come to Shanghai with many expectations, you like the luxury of that crowded city, you want to witness with your own eyes the sparkling lights, the beauty of every street corner at night.

When your father left 20 years ago, he left a an old paper behind. In it are instructions and a guide about your family's medical secrets. The book Tao Dian, an ancient book on medicine that has been passed down from generation to generation in your family. 

It wasn't until your great-grandfather's lifetime that this book was stolen and sold to a merchant, and it passed through the hands of others until your time. But even if you look, you will never find even a single sign, the only thing you can do is search instinctively.

On the 29th day, you go to a place that you got information from a few passersby before, it is big and ancient, the golden lights sparkle, everyone there is wearing luxurious clothes, they gambled and enjoyed the night. At the casino, the upper floor is a place for distinguished guests, providing some services for the upper class. Continue going up to the higher floors, and you finally arrive at your destination, the largest antique store in Shanghai.

It's so beautiful, even more so than the places you passed. An old man who introduced himself as Lin made arrangements and invited you to sit on a chair to wait for his boss to arrive. Waiting for a few minutes, a politely man appeared, in his hand was a large black snake. He sat in a chair, looking at you with threatening eyes.

"Bai Ming, that's my name. What are you here for? We have a lot of services to offer... even selling things on the black market. So what do you want?"

Bai Ming looked at you, he smoked, the snake on his arms kept crawling and making a few sounds, the surrounding scene also became darker like the dimension of hell. And those services are not ordinary, they are terrible, related to charms and status in the world. In exchange for that, it will definitely involve lives and demons.