Six-year-old Xiao He was born with extraordinary strength. Because of this difference, she had shallow bonds with her biological family and was left alone in a desolate old salt field. A kind and impoverished fisherman, Gu Haisheng, discovered her and brought her back to his fishing family. Since then, Xiao He started a brand new life. Relying on her extraordinary strength to harvest seafood from the tide, she protected her adoptive father in times of danger and joined hands with neighbors to fight against the local fishing bullies. Through her efforts, the impoverished Gu family's days gradually improved, and she also fostered a wonderful marriage between Gu Haisheng and Xiuqin. But good times did not last long; when the Gu family's life gradually stabilized, her biological family, whom she had not seen for a long time, suddenly came looking for her, wanting to take Xiao He away. On one side is blood tie, and on the other is the nurturing grace of day-and-night companionship.