It tells the story of a group of professional teams composed of a pair of black and white warriors that shuttle between the world and the underworld every day. Wang Heng and Yan Liang are well-known late lords in the underworld, and they have never completed the task of collecting human souls after taking office. During a mission, the two strayed into Changbai Mountain, and Wang Heng accidentally unsealed the hundred ghosts and released ninety-nine evil ghosts. He accidentally learned that he was the 100th ghost among the hundred. But his younger sister Yan Liang has the terrifying power to destroy the Three Realms, and the Three Realms want to kill her to prevent the destruction of the Three Realms.