Lin Mo returns to Lin Family Village to start a business back home, only to be pressured by the greedy village chief, Zhao Mancang, into donating money for road construction under the pretext of serving the collective good and demolishing his ancestral home. While protecting his family's ancestral home, Lin Mo unexpectedly discovers a mysterious blank map left behind by his grandfather. Determined to uncover the map's secrets and solve the mystery of his grandfather's unexplained voyage to sea years ago, he sets off on a perilous deep-sea expedition with his brothers. In the end, he not only uncovers long-buried secrets but also leads the entire village toward sustainable development and shared prosperity.