Poor fisherman Zhou Haichuan goes out to sea to fish, and unexpectedly fishes a three-year-old little girl named Momo out of the fishing net! Who would have known that this child is actually a little lucky star, who can not only understand the movements of the sea, but also find fish schools and predict wind and waves. Ever since Momo entered the family, the Zhou family, who were originally too poor to put food on the table, gradually welcomed a turning point. Facing suppression from unscrupulous merchants, doubts from villagers, and wave after wave of difficulties, the family always sticks together through thick and thin. Relying on kindness, honesty, and hard work, they step by step walk onto the road to prosperity and lead the villagers to live a good life. But just as the family's days are getting more and more prosperous, Momo's mysterious background also gradually surfaces.