After three years of marriage, Li Haotian, a live-in son-in-law, is despised and abandoned by his wife Lin Yanran's family. Just as he is about to divorce, he unexpectedly acquires a hermit crab-powered coastal foraging system. With extraordinary abilities in gathering seafood, fishing, and diving, he returns to his fishing village and repeatedly catches incredibly valuable seafood, including ornate spiny lobsters, wild large yellow croakers, bluefin tuna, and yellow-lip croakers. He amasses tens of millions in wealth in a short time. His former wife's family, who once looked down on him, comes to regret their actions and begs to reconcile and remarry, but Li Haotian firmly refuses. Together with his brother Chen Kun, he sails into distant waters aboard a new fishing boat, embarking on a life of newfound wealth.