After losing her father during a famine, Lin Qingqing's family runs out of food. The unscrupulous Zhao family uses coarse grains to pressure her into marrying their son to repay a debt. At the brink of despair, the young woman awakens a mysterious space that allows her to travel in both directions between the ancient world and the modern era, where supplies are abundant. She sells her jewelry and gathers mountain produce and medicinal herbs to exchange for food and medicine, protecting her family while repeatedly fighting back against the Zhao family. While venturing into the mountains, she rescues Qin Huaizhi, the legitimate son of a marquis's household, who is being hunted by his own family. She establishes a medicinal herb trade between the two worlds and overcomes multiple crises involving displaced refugees, pursuers, and covetous merchants. She also helps Qin Huaizhi uncover the old case of his stepmother poisoning his birth mother and foil a conspiracy to seize his noble title. As the space continues to evolve, it conceals opportunities for immortal cultivation, allowing Lin Qingqing to cultivate the Great Dao. Relying on no one's charity, she changes her fate against all odds through sheer determination.