The background of the story is set in Jindi, a rural village in South Korea in 1992. It tells the story of housewife Han Jung-sook (played by Kim So-yeon) who has been living an ordinary life as a woman.However, one day when she discovered that her family could not even afford her son's new schoolbag, she realized that her family was in dire straits and she had to work part-time outside to make money.

After trying various jobs, she chose to devote herself to door-to-door sales of adult products imported from foreign countries, and worked with three people: Oh Jin-hee (played by Kim Sung-ryung), “ Seo Yao-bok (played by Kim Sun-young), and ” Lee Shu-ri (played by Lee Se-hee)Friends are composed of four sisters who visit sales.As their careers gradually improve, the four of them not only gradually become independent, but also quietly inject vitality into the secret world of husband and wife.

《A Virtuous Business》(정숙한 세일즈/A Virtuous Business) is a TV series produced by JTBC, produced by High Zium Studio and 221b, directed by Jo Woong, written by Choi Bo-rim, and starring Kim So-yeon, Yeon Woo-jin, Kim Sung-ryeong, Kim Sun-young, and Lee Se-hee.On October 12, 2024, the drama will be broadcast on South Korea's JTBC TV station, Netflix, and TVING.