In a ghostly world where evil spirits are rampant, more than half of the cities have been captured by ghosts, and the scope of human survival is getting smaller and smaller. Ghost masters have become an important force in protecting mankind and maintaining peace. Lin Mo accidentally traveled to a ghost-bending loser with a contract limit of only 0.5, And accepted the ultimate mission sent by the system to "become the strongest ghost master and save all mankind." At the same time, he was bound to the "defense-breaking system" and obtained cheating skills that infinitely increased the contracted ghost limit.