Former real estate tycoon Shen Yan was despondent after going bankrupt, but he was unusually appointed as a trainee judge by the underworld. Holding the "Yin Division Performance System" in hand, he must complete various ghosts' bizarre obsessions to accumulate KPIs in exchange for a chance to start his life again. As a result, the style of the underworld changed suddenly: Naihe Bridge implemented a diversion of calls, and a satisfaction survey was conducted by the Wangchuan River. He used modern business thinking to win over his colleagues, but in each "business", he faced his deepest guilt - the daughter he had neglected for a long time in the earthly world. When his daughter's crisis and the ultimate test of the underworld came at the same time, he realized that the real salvation was never in the system tasks, but in the family protection that he had been avoiding.
