Episode 143 - The Battle with Crocodile! Luffy vs. the Desert Pirates

Episode 143
The Battle with Crocodile! Luffy vs. the Desert Pirates
Japanese: クロコダイルとの戦い！ルフィVS砂漠の海賊団
Kurokodairu to no Tatakai! Rufi VS Sabaku no Kaizokudan

The Straw Hats learn more about the ancient technology that has shaped the Grand Line. They encounter a group of inventors who have been working on creating advanced weapons to protect the world. However, a rogue faction seeks to steal the technology for their own purposes, and Luffy and his crew must prevent this from happening.