Qin Xiuxiu, a modern young woman, travels through time and becomes the universally despised 'evil mother-in-law' in an ancient mountain village. Coming to her senses, she takes the initiative to right past wrongs and seek justice for her eldest daughter-in-law. By chance, she discovers a passage that allows her to travel back and forth to a modern-day vegetable market. Using modern supplies and agricultural knowledge, she leads the entire village in digging for Chinese yams, channeling mountain spring water, and surviving the famine together. From being hated and attacked by everyone to earning the respect of the entire village, Qin Xiuxiu ultimately chooses to stay and protect the family that truly needs her. The story conveys the heartwarming values of admitting one's mistakes and making amends, using wisdom wisely, and working together to overcome difficulties, while showcasing the combination of personal growth and collective strength.