Seeking to be the greatest pirate in the world, young Luffy, endowed with stretching powers from the legendary demon fruit "gummo-gummo" travels towards Grand Line in search of One Piece, the largest treasure in the world. Along with comrades in arms: Roronoa Zoro (the swordsman), Usopp (the liar), Nami (the navigator), Sanji (the cook), and Chopper (the doctor), comic adventures mix with true heroism in the time of great naval battles.