Tidewater-gathering girl Shen Tinglan is plotted against and pushed into the sea by her boyfriend Chen Hao, accidentally saving Ao Yuan, the Third Prince of the East China Sea, and receiving a dragon scale for protection. With her mother suffering from leukemia and urgently needing a huge sum of money, she relies on the divine power of the dragon scale and her superb fishing skills to fight against the evil Chen Hao and Liang Jiaojiao, establish a fishery cooperative, protect the marine ecosystem, punish illegal merchants, save her mother, forge bonds with the sea clan, and embark on her own rebirth.