Lin Wanwan, a marine biologist, is reborn in the 1970s in Dongwan, a fishing village, as the despised “foolish girl.” Her mother accepts a bride price and forces her to marry Zhou Xiangyang, a fisherman who only wants to marry the woman he has loved for years. Lin Wanwan neither argues nor makes a fuss. Instead, she draws on her marine science knowledge from her previous life and her special ability to hear animals' inner voices. Starting with finding fish and catching lobsters, she turns unwanted jellyfish, kelp, and other marine products into profitable businesses. She then develops intensive aquaculture of pearl oysters and oysters, leading the entire village to prosperity. When the secret of who truly saved Zhou Xiangyang's life years ago is finally revealed, Zhou Xiangyang, who had insisted on breaking off the engagement, gradually comes to see and respect Lin Wanwan and eventually falls in love with the young woman everyone once looked down on.