After the Xuanmen War, Su Yun inherited his father's legacy and became the successor of Onmyoji. Because there was a female corpse in his home, he was personally arrested by beautiful investigator Ren Yingying, and an interrogation that subverted cognition began. Since then, the Investigation Bureau has added a non-staff "case-solving consultant", and all kinds of weird and unsolved cases have come one after another. Su Yun is solving the unsolved cases while looking for clues to the Xuanmen War.
