In the ordinary morning of Kasukabe, Nohara Shinnosuke woke up from a strange dream about the sea and a straw hat. He didn't know it yet, but a mysterious rubber fruit had quietly rewritten his destiny, giving him a strange body that could expand and contract freely. When a white light cracked in the sky, the five Kasukabes were drawn into a strange whirlpool and traveled to a new world where pirates and the sea roamed.
Xiaoxin became a rubber-powered person with the dream of "One Piece", Kazama transformed into a proud swordsman holding a black bamboo sword, Nini held a weather stick that can control wind and rain, Masao became a gentle and brave little doctor, and Dumb awakened the incredible ability of the snot fruit. The five people were scattered in unfamiliar waters, each met the person who protected them, and learned to grow and hold on to courage during the adventure.
They met, gathered, and sailed into the Grand Line in a small boat. They were pursued by the navy and surrounded by bounty hunters, and the first battle started at Whiskey Peak. Funny and nonsensical daily routines are intertwined with passionate adventures. On one side is Xiaoxin's off-line complaints, and on the other side is the life-and-death bond between partners.
From calm seas to stormy waves, from unknown islands to naval bases, five five-year-old children use their most innocent courage to explore the most magnificent world. They don't have amazing strength, but they have an agreement to never give up; they don't have grand ambitions, but they want to go to the end of the route together.
This is a wonderful adventure that spans the world. When Crayon Shin-chan meets the Pirate King, when innocence meets passion, bonds and dreams will become the most dazzling light on the sea.