Episode 439 - The Hottest Showdown! Luffy Faces Off Against the Navy's Massive Menace

Episode 439
The Ultimate Challenge! Luffy vs. the Marines’ Greatest Threat
Japanese: 究極の挑戦！ルフィVS海軍の最強の脅威
Kyūkyoku no Chōsen! Rufi VS Kaigun no Saikyō no Kyōi

The crew embarks on a journey to find the hidden treasure, facing new challenges and dangers along the way. As they navigate through a series of islands, they are confronted by new adversaries who seek to control the treasure for themselves. The episode sets the stage for a thrilling treasure hunt, filled with intrigue and peril.