Thousands of years ago, angels, demons and humans joined forces to seal the leader of monsters, Hades Slera. In order not to cause damage due to the ability, humans sealed most of the ability, leaving only four families with half of the ability to repair the seal.
Thousands of years later, the heavenly angel Qian Lingxue came to the human world to fulfill her mother's last wish. Unexpectedly, the seal on the human world was loosened due to the negligence of the four families. Low-level monsters appeared one after another. The pendant given to her by Qian Lingxue's mother glowed... When she joined forces with people to fight against the monsters, she received another shocking news...