To pay off her debts without her husband's knowledge, she secretly works as a delivery health girl, but when she is unable to earn any money due to the economic downturn and is at her wit's end, she plans to become a sugar daddy with her wealthy brother-in-law who lives with her. However, because she is his younger brother's wife, he is not very responsive to her advances. She uses every trick in the book to seduce and seduce him. After years of patience, the brother-in-law finally succumbs to his wife's temptations. Although she had thought of it as a relationship based on money, her brother-in-law loses control as soon as they have sex, and he loses all sense of reason.