Yu Yan dies unexpectedly. He closes his eyes, opens them again, and finds his soul has been recruited by the Department of Resolving Ghostly Obsessions.
The good news: Every completed assignment earns him merit for his next life. Soon, he could be a rich second-generation kid who, in an emo moment, sighs, "I don't need lots and lots of money. I just want lots and lots of love." Employees are also granted special permission by the Underworld to return to life, so they can live normally among the living. Even if they die, it's basically as if they never did.
The bad news: You work when you're alive, and you work when you're dead. Daytime means a job in the mortal realm; nighttime means a job in the Underworld.
In short: Just get on with it.
Fu Shuheng was born with yin-yang eyes. He is taciturn and often wears a peachwood bracelet, earning him the nickname "the aloof Buddhist cultivator."
Fu Shuheng: ...I got this at a Taoist temple.
Then one day, he realizes that an employee at his company is surrounded by an overwhelming amount of yin energy, with several wandering ghosts chattering around him.
Yu Yan: "Don't rush. I'll deal with yours after I finish dealing with yours. Don't worry, I've got it under control. I can handle this kind of situation. Give me a minute. I haven't clocked out from my mortal-realm job yet..."
Fu Shuheng: ?
Later:
Yu Yan: "Boss, I joined you right after graduation!"
Fu Shuheng: "...You just started working at my company right after graduation."
Later still:
As Yu Yan gets more and more adept at his Underworld job, business tycoons, movie stars, top-tier celebrities, research geniuses, and all sorts of other people come looking for him at his company in the mortal realm.
Fu Shuheng: "All right, I'll expand the company's services again."
Theme: Whatever your job is, do it well