This is a dream world full of fantasy. In Chang'an City at night, the dreams of Chang'an people need to be protected, so there is a nightmare master who enters the dream with his own soul and kills the nightmare beasts that disturb people's dreams. The two protagonists reunited after several years apart. The two have become the people they wanted to be when they were young, but one of them has long forgotten the other. In the journey of fighting side by side in the future, they will help each other, get to know each other again, and overcome the greatest difficulties.
Purpose: No amount of nightmare masters can save people trapped in nightmares by their own evil deeds