The story of One Piece: Unlimited World Red takes place many years after the original One Piece arc. Luffy and his crew, now an established pirate, are on a quest to find the legendary "All Blue", a vast ocean covering 20% of the Grand Line. The main antagonist is Trafalgar Law, who has returned with a powerful new Devil Fruit power.
The gameplay revolves around exploration, character development, and turn-based battles. Players control Luffy or other crew members as they navigate through various environments, including islands, dungeons, and sea routes. Character customization and development are key to success in battle, as each character has unique abilities and strengths. The game also features a dynamic weather system and day-night cycles that affect gameplay.