This series follows a tense and dangerous adventure involving a group of hardened individuals who are driven by intense ambition and an endless desire for wealth. Each of them comes from a rough background and carries their own secrets, motivations, and personal codes of logic. Despite their differences and mistrust of one another, they come together with a single goal in mind: to search for valuable artifacts hidden beneath the sea near the coast of Shinan. As the group begins their risky underwater expeditions, greed and suspicion slowly start to rise among them. What initially appears to be a simple treasure hunt quickly turns into a complex struggle filled with betrayal, rivalry, and unexpected dangers. The ocean hides more than just ancient relics, and every dive brings new risks that test their courage and loyalty. While they chase fortune beneath the waves, the fragile alliances within the group begin to crack, forcing them to confront not only the dangers of the deep sea but also the darker sides of human ambition.