Through Aunt Guifang's matchmaking, Chen Haichuan meets Shen Zhihe. Her father, Shen Dehai, went missing at sea, leaving behind debts and a broken boat, while her younger sister, Shen Xiaoyu, also suffers. Taking the initiative, Chen Haichuan assumes the debts, repairs the boat, catches fish, and helps the sisters clear their debts. Guided by a sea map, the three find blue crabs and lobsters, gradually opening up sales channels. Facing competition for profit and storms at sea, Chen Haichuan upholds principles and sacrifices money to save lives. Upon learning that Shen Dehai might still be alive, they board Black Stone Island and rescue the injured father. Afterwards, the family manages their livelihood together, their days grow better and better, and they hold a belated wedding banquet to welcome a joyful reunion.