The content of each episode of One Piece 349-381 was as follows: Luffy and Sauron work together to stop Nami from leaving the Water World. Luffy and Nami fight fiercely in the underwater prison, while the warden Nono fights with Luffy and the others. Chapter 350: Luffy meets his good friend, Rolonuo, in prison. Together with Nami, they head to the Water World to find clues about the Grass Hat Pirates and successfully find the legendary "One Piece" but are intercepted by Warden Nono. Chapter 351: Luffy and Nono fight a decisive battle and finally defeat Nono and escape from prison. Chapter 352: Luffy, Nami, Rolonnoya Sauron and Usopp encounter powerful naval investigators in the Water World, but they manage to escape and continue their adventure. Chapter 353: Luffy and the others learn about the story of the Red-haired Shanks and decide to go to the "New World" where the Red-haired Shanks is located to find the new target of the Grass Hat Pirates. Luffy and the others encountered many powerful opponents in the new world, including Rolonuo's "Sword Stream" technique, Nami's aerial flying technique, and Usopp's "Ghost Tetsuya" sword technique. Together, they experienced a series of adventures and battles. Chapter 355: Luffy and Rolonuo Sauron join forces to defeat a powerful admiral. Together with Nami, they find the legendary " Devil's Fruit " and decide to bring it back to the Grass Hat Pirates. Chapter 356: Luffy and the others met a strong man named "World Hunter" who had the ability to control the weather. Together, they launched a fierce battle with "World Hunter". Chapter 357: Luffy and Rolonuo Sauron joined forces to defeat a Devil Fruit ability user named " Devil Man " and successfully brought him back to the Grass Hat Pirates.