New bride Shen Xiuying marries into the Chen family. On her wedding day, she sees Zhao Jinlian publicly humiliate her mother-in-law and steps forward to defend her. She also proposes that they split from the extended family, and the four of them move into a dilapidated mud-brick house. Using wild chilies and river shrimp, she makes a spicy shrimp sauce and starts a business, creating the “Spicy Sister-in-Law” brand. She repeatedly overcomes her eldest aunt’s malicious attempts to make things difficult. Working together, the family builds a sauce workshop and opens a shop in the county town. The relatives who once bullied them finally repent, and the family enjoys a stable, prosperous life.