Vankrad, the great pirate once feared across the seas and known as the 'Pirate King,' met his end when betrayed by his own men and died on a remote island. Fueled by unfulfilled ambition and hatred toward his betrayers, his lingering resentment transformed him into a vengeful spirit, doomed to wander the island. Three hundred years later— Having possessed a new body, that of a man named Klaus, Vankrad infiltrates the kingdom. Now disguised as a naval officer, he sets out to defeat Olivia, known as the strongest among the three great pirates. But this was merely the prologue of his grand revenge. His true aim turns toward the royal bloodline—Princesses Iris and Mireille.