Installment 13 - The Fearsome Pair! Meowban Siblings vs. Zoro!

Episode 13
The Terrifying Duo! Meowban Brothers vs. Zoro!
Japanese: 恐怖の二人組！ニャーバン兄弟VSゾロ！
Kyōfu no Futarigumi! Nyāban Burazāsu VS Zoro!

The crew arrives at an island where they meet a group of strange, yet friendly characters. However, this peaceful time is interrupted when they are forced into a battle against a gang of criminals. Luffy and his crew continue to show their strength and teamwork, solidifying their bond.