Orphan Tangtang got separated from her aunt while leaving the abusive main household and was picked up by Grandma Lin, who brought her back to the Lin family. With her extraordinary hearing, she followed sounds to find the ancestral braising vat and aged wine, trading them for money to cure grandpa's leg injury and fund Xiaoyu's studies. After Liu Ergou dug and collapsed the back wall of the old shop, Tangtang exposed him using her hearing ability. When her aunt was looking for her, she encountered danger on the overpass and was rescued by Lin Hao. The Lin family cherished the child rather than her special ability. The whole family switched to making mountain goods and dried goods, relying on account books and trustworthiness to win supply and marketing cooperative orders. Lin Hao and Xiuyun ended up together, and Tangtang drew a family portrait, finally having a real home.