Shen Zhou, the second officer of an ocean-going fishing vessel, gives up his lucrative position and returns to his hometown to help his brother-in-law, Wang Haitao, build a business. Over three years, thanks to his unparalleled fishing knowledge and technical expertise, he transforms his brother-in-law's business from a single dilapidated boat into a fleet of three vessels. However, at the height of their success, his greedy brother-in-law and his status-conscious older sister turn against him, humiliating him and driving him away with a mere 80,000 yuan in profit-sharing while stealing credit for all his hard work. Betrayed by his own family, Shen Zhou refuses to give up. Drawing on his years of experience at sea, he rents an abandoned saline wasteland that nobody wants, purchases a decommissioned fishing boat, and stakes his entire fortune on a difficult new venture: cultivating premium sea grapes, a highly prized delicacy.