During the Famine Years, six-year-old Mi Yang accidentally opens a two-way portal connecting to a modern Northeast Morning Market. To save her starving mother and four older brothers, she trades wild vegetables and mountain goods from the countryside for grain, medicine and farm tools from the modern world. The siblings rely on modern knowledge to improve farming, fend off the famine, and gradually improve their living conditions. Eventually, Mi Yang not only leads the entire village out of famine and achieves adequate food and clothing, but also returns to help the benefactors who assisted her in the modern world, fulfilling a heartwarming cross-time mutual bond.