Wren Yu Wanhe and Fiona Qin Fangfang travel to a famine year. Wren's sister-in-law tries to sell Wren for grain, and Wren later reunites with Fiona, who has also traveled to the era and lives as a widow. Wren helps Fiona stand up to her cruel mother-in-law. The two plan to start a business during the famine, accidentally save a young master from a wealthy household, and rescue two handsome brothers who are being pursued. The four begin living together, and the two brothers Kael and his companion pretend to have amnesia to stay in White River Village for their mission. Wren and Fiona use modern business thinking to solve the village's grain crisis, partner with Mr. White to establish a grain shop, and manipulate famine grain prices using the concept of "futures". However, Mr. White seizes control of the grain shop, the Qi brothers' true purpose is exposed, and the four turn against each other. The two sisters travel to the capital to seek help, Wren uses account books to deal with the former dynasty's orphan and the key to the former dynasty's grain factory, and defeats Mr. White and Eunuch Gideon. The four resolve their misunderstandings, return home in glory, and use the former dynasty's granary to benefit local people.
