Years ago, the pirate captain executed one of his subordinates over a paltry sum of money. Now, the subordinate’s child has left the territory ruled by the pirate captain and traveled to a remote island, searching for a way to grow stronger and take revenge. Along the way, the child finds care and affection from the island’s leader and new companions, and gradually begins to refine their revenge plan. Meanwhile, the pirate captain’s descendants are growing up too, eventually ending up on the opposite side of the island. Fate’s cruel twists make the two sides become “partners” who must stand together through thick and thin. And it seems that the enemy’s child has the same father’s murderer as they do? How can the revenge plan they’ve long since laid out proceed now?