The story follows Captain Lake Castle as he leads the "Freedom Sail" fleet in search of legendary treasures and a free life in the Seven Seas. During this period, there was a desperate battle with the kingdom's navy, competing pirates, rebels and mysterious forces. Each volume focuses on a different adventure and advances the characters' personal growth and relationships with each other, restoring a pirate world full of adventure, humor and complex humanity. The main story and the side story are intertwined, and finally the finale comes after the decisive battle with the kingdom.
