The background is very complicated. Tomb Youchen and Tomb Youxin, brothers and sisters with mysterious powers, were assigned to two different camps by Archangel Sherafel, the Holy Angel and the Fallen Angel, because they did forbidden things. Five hundred years after this incident, the silver-haired boy Lou Lichun formed a contract with Tomb Youchen, who had become a Holy Angel, when he was escorted to the Hell Palace, and became the Angel of Death with blood-colored pupils.
At this time, Sherafel also appeared next to Chun, and the memories that had been separated for five hundred years were reconnected...