The story revolves around a legendary navigation secret book, "The Chart of All Nations". This secret book not only records the route to the rich new continent, but also hides a secret that can shake the foundation of the empire. Shen Mo, a young man in the city who pursues his father's footsteps and longs to solve the mystery of the maritime ban, and Lin Suwen, the daughter of a general who shoulders the family mission and tries to find a way out for the family between the court and the ocean, are tightly entangled by the thread of fate. They went from being suspicious of each other to fighting side by side. In the treacherous court and the murderous ocean, they were involved in a huge whirlpool related to their personal destiny, the survival of their family, and even the future of the empire.
