Lu Fan, a modern business elite, transmigrates into the body of a poor young man in ancient times. At a critical moment, he takes up his elder brother's dying wish and vows to protect his sister-in-law and young sister. Armed with advanced business ideas and modern practical knowledge, he earns his first fortune by harvesting seafood along the coast, cleverly sets up market stalls, develops innovative delicacies, outsmarts unscrupulous merchants, and builds connections with influential benefactors. Rising from absolute poverty to become a wealthy local merchant, he uses his own hands to secure a stable life for his family and carves out a passionate legend of making a fortune.