Venture into the expanse of the open sea and navigate your way across various islands with the Thousand Sunny as a base. Introducing the ultimate One Piece game filled with adventure, battles, and a touching storyline! While at sea, the Straw Hat Pirates encounter waters that are guarded by a mysterious ancient civilisation. Thus begins a grand voyage across the many islands that are centred around a large mystic tree, with a storyline that spreads over two games!