Shen Mo, an unlucky graduate with no job prospects, wanders into an antique shop and successfully “lands on her feet” as an excellent shop assistant.
By day, she's a sales clerk at the Cloudwater Pavilion. Late at night, she's the night watchwoman for “Kindred Souls.”
They trade one object for another, accepting souls, lifespans, memories, the seven emotions and six desires. They'll take anything and trade anything.
So by day, the young Shen is sharp-tongued but warmhearted, capable of arguing a shady merchant into silence. At night, Boss Shen holds court and navigates the world of spirits and monsters with ease.
By day, she appraises treasures, berates people, and haggles. By night, she cultivates, makes trades, and fights monsters. When Shen Mo belatedly realizes her boss has been keeping an eye on her, she's surprised to find she doesn't want to run at all.