After Lin Mai died, he was trapped in the human world as a ghost.
No one can see him.
After the first seven days, not only did he not enter reincarnation, but he was pulled to another dimension. God gave him a choice, and he returned to the human world as a ghost, accompanying a person who had nothing to do with him.
Miraculously, this man could see him.
The longer he stayed with this person, the more he understood the subtle connection.
God: "Why did you choose him?"
Lin Mai: "Because he is a proud man with a bright future."
…
Xie Qing: "Long time no see."
Purpose: Serve the motherland