Zhao Xiaojun, a maid, works for a family with strange rules, including a forbidden room where the mistress resides. She uncovers oddities and rumors about the mistress's death.
Zhao Xiaojun has been working as a maid for a month and faces financial challenges.
The mistress of the house is said to have a rare disease and is not to be seen by outsiders.
Zhao Xiaojun discovers a forbidden room and a black-and-white photo, which in her hometown signifies death.
Rumors suggest that the mistress died three years ago, yet Zhao Xiaojun believes she's been serving her meals.
The maid resolves to uncover the truth about the supposed mistress.