Reborn in the 1970s, Ye Yun faces enormous debts alongside her three children. Armed with a daily intelligence system, she uses its precise tips to gather seafood along the shore. Through a cash-buying strategy, she dismantles a neighboring village bully's monopoly and leads the villagers toward prosperity. While establishing a food mutual-aid group, Ye Yun cleverly outmaneuvers various powerful factions and gradually uncovers the truth behind her late husband's murder. Ultimately, she brings the mastermind to justice and ushers in a new era of island-based foreign trade.