Su Qinghe marries in place of her younger sister and becomes the wife of Shen Yanzhou, a young man who makes his living in the mountains. The two work hard to manage their household and run their business honestly, leasing a barren mountain to develop medicinal herb cultivation and helping fellow villagers grow prosperous together. When faced with a pig farm that pollutes the environment, Shen Yanzhou steps forward to report it in accordance with the law, protecting the green mountains, clear waters, and villagers' rights. In the end, the pig farm is shut down legally, the countryside becomes clean again, and the couple begins their own happy life.