In 1977, Wen Yulan showed civic courage at the ferry, but was betrayed by her fiancé Su Zhenhai and cousin Wen Xiaoyan who broke off the engagement. Moreover, her relatives withheld her mother's keepsake and forced her to marry in place of another to Heishishi Island. Upon arriving on the island, she learned that the older woman she had saved was actually her mother-in-law, and her husband Han Lin was the head of a national breeding base. Relying on the manuscripts left by her mother, Wen Yulan saved tens of thousands of sick mussels, became a technical consultant, and even passed the province-wide college entrance examination. She and Han Lin fought side by side and headed towards a wonderful future, while the former betrayers ultimately regretted it immensely.