Liang Zhenshan is reborn back to the day his wife Lin Xiulan suffers a difficult childbirth. In his past life, he misappropriated his wife's lifesaving money for childbirth to give to his gambler younger brother Liang Dajiang, causing his wife and daughter to die tragically and himself to end up destitute and dying of illness. After his rebirth, he wakes up abruptly, swearing to protect his wife and daughter to the death, and cutting off the blood-sucking shackles of his original family. Accidentally unlocking the marine illustrated guide superpower, possessing sea-gathering abilities such as dolphin echolocation and octopus flexible bones, he joins hands with his brother Chen Haichuan to gather seafood to get rich, open a shop and establish a career, fight against his greedy mother, scoundrel younger brother and business rivals, counterattacking to protect a complete little family.