Episode 365 - The Last Treasure! Luffy and His Crew’s Final Adventure

Episode 365
The Last Treasure! Luffy and His Crew’s Final Adventure
Japanese: 最後の財宝！ルフィと仲間たちの冒険
Saigo no Zaihō! Rufi to Nakama-tachi no Bōken

With the rival pirate group defeated, the Straw Hat Pirates are able to continue their journey. However, they learn that the legendary weapon the pirates were after has fallen into the hands of an even more dangerous group. The episode sets the stage for the next major confrontation as the crew realizes the scope of the conflict they are now part of.