Tto-sun (Do Kum-bong) is the younger daughter of a transportation company owner (Choi Nam-hyeon) who came to South Korea from Hamgyeongbuk-do. She possesses great financial acumena trait she inherited from her entrepre...展开neurial father. One day, a young man named Jae-gu (Lee Dae-yub) comes in with a letter of recommendation and asks to be hired as a driver. Lending him a sum of money, Tto-sun befriends Jae-gu. When Tto-sun's father reprimands her for her act of generosity, she decides to move out of her own. Although her mother tries to dissuade her, Tto-sun does not yield, insisting that living alone will help her to cultivate her independence. Unlike the unworldly Jae-gu, Tto-sun shows herself to be enormously savvy: she assiduously makes money by every available means, including selling rat traps, vending rice cakes, and delivering coals. Tto-sun proposes to Jae-gu that they should buy a car and start a transportation business. Jae-gu, in his turn, comes to care for the resourceful Tto-sun. Her parents object to the marriage at first, but on the day Tto-sun and Jae-gu return to visit them with the newly-purchased vehicle in tow, they consent to the union.