Hikari is a wife who nurses her sickly husband. To cover hospital bills, medication, and living expenses, she has accumulated debts and is exhausted from being unable to find a job. One day, she is introduced to a suspicious job by a loan shark. Desperate and unable to be picky, she accepts the job and goes to the designated location. She is confused when told she only needs to work as a housekeeper and is offered an exorbitantly high reward, but there, she already sees the senior housekeeper, Rie...