Lin Haisheng is reborn on the day his family splits up in 1992. In his previous life, his gambling addiction and reckless spending drove his family apart, leaving him destitute and ultimately dead at a construction site. After his rebirth, he gains a treasure-nurturing system that identifies the growth potential of seafood, allowing him to turn overlooked skinny crabs and discarded juvenile stock into premium marine delicacies. He moves out of the old family home with his wife and daughter, starting from discarded skinny iron-shell crabs. Step by step, he raises butter crabs, plump sea cucumbers, and double-headed abalones, then brings his eldest brother into the business to build an honest livelihood together. Along the way, he fights Zhou Mazhi, a buyer who deliberately drives down prices, and exposes his despicable tricks, including stealing his techniques and poisoning his stock. He eventually opens up distribution channels between mainland China and Hong Kong. With his skills, Lin Haisheng turns his fate around, protects his family, and begins a prosperous new life by the sea.