Shen Yanzhou, inheritor of the bamboo lantern craft in Yunqi Lane, keeps his old workshop alive with dwindling orders, still faithful to traditional methods. Su Wantang, a cultural creative designer, arrives with new blueprints, hoping to revive bamboo lanterns with a modern aesthetic. Shen worries the craft will lose its soul; Su insists on honoring its roots while innovating. From conflict to collaboration, they select bamboo, split strips, weave frames, and paste lantern covers, weathering a quiet market and cracking lantern faces, until they finally refine the "Yunqi Bamboo Lantern." At the riverside lantern festival, bamboo lanterns light up the night, the old craft is seen, young people want to learn, and its legacy finds new light.