Returning home craft artisan Tang Xin returns to Tangche Village, determined to restore the idle old sugar cart and revitalize the ancient method brown sugar craftsmanship, but encounters skepticism from veteran craftsman Grandpa Tang. Left-behind child Xiao Tang builds a mini sugar cart with waste wood to touch everyone, and villagers like Tang Que, A Tao, and Uncle Lu pitch in. After rainstorm setbacks, the whole village cooperatively repairs the sugar workshop and overcomes difficulties in stone roller restoration and sugar boiling and making. Cultural and tourism planner Fang Yuan initially questions the project's value, but grants approval after witnessing the vitality of the sugar cart juicing, handmade classes, and sugar fragrance night tours. The abandoned primary school transforms into a brown sugar workshop, the old craft achieves intergenerational inheritance, the sugar fragrance drifts across the mountain village once again, and intangible cultural heritage ancient methods burst forth with brand-new vitality.