Li Qiulan, the eldest daughter-in-law, has accumulated years of resentment because her mother-in-law consistently favors the younger couple whenever problems arise. Her relationship with her younger sister-in-law, Sun Yuzhen, is also strained. When the family divides its farmland and property, the allocation is unfair. Deeply hurt, Qiulan decides to establish an independent household and moves with her husband into an old earthen house. The couple works hard and honestly, starting with a street stall and gradually building a business selling local mountain products. Sun Yuzhen eventually comes to her senses and joins Qiulan in starting a business. Together, they weather malicious competition from rivals and repeated difficulties caused by family members. In the end, they establish a cooperative through their joint efforts and carve out a successful future. The family members who once stood against one another gradually reconcile and find a stable, happy life.