Thousands of millions of years ago, the entire world was controlled by demons. People could only surrender to the devil's feet and be enslaved by the demon all day long. Finally, people couldn't bear such a purgatory life, and formed an exorcism team, which would later become the demon hunters, to fight against the demons. In modern life, there exists a group of people who appear to be just like ordinary people. They work normally during the day, but at night they protect the safety of the entire city. They shuttle back and forth in the bustling night, saving the souls that have been corroded by the devil. And such a group of people may be living around you, but you just don't know it. The story happens to a high school graduate named Ji Xiaomo. Like all high school graduates, Ji Xiaomo is facing separation, dinner parties, and college. She never thought that one day, the devil would find her and use her to recover. She is just an ordinary high school student, and the world in her eyes is clean and transparent. But she must accept every task from the devil and collect all the holy energy. . . Under the control of the devil, what kind of adventures will she have, how will she be chosen by the devil, and how can she escape. . . When the person she loves the most turns out to be her biggest enemy, how should she choose? To protect his family or to follow him without hesitation. . .