Ep 16. Protect Kaya! The Usopp Pirates' Great Efforts!

In One Piece season 1 episode 16, titled "Protect Kaya! The Usopp Pirates' Great Efforts!", the Straw Hat Pirates land on an island where they meet a young rich girl named Kaya who lives in a mansion surrounded by vast gardens and plants. Kaya is being threatened by a notorious pirate named Captain Kuro who claims to be her butler, and her only hope of survival is the Usopp Pirates.

Usopp, a member of the Straw Hat Pirates and a childhood friend of Kaya, informs Luffy and the gang about the threat to Kaya. Initially, Luffy and the others are reluctant to help and suggest that it is Kaya's problem to deal with. However, Usopp implores them to reconsider, and the group eventually agrees to help save the girl.

Captain Kuro, who is also known as Klahadore, devises a plan to assassinate Kaya and inherit her wealth. To do this, he hires a group of mercenaries and promises them a share of Kaya's wealth in exchange for their loyalty. The mercenaries are successful in getting inside Kaya's mansion, and they overpower the guards and servants. However, their plan is foiled by the Usopp Pirates who come to Kaya's rescue.

The Usopp Pirates, led by Usopp himself, use their unique skills to defeat Captain Kuro's mercenaries. Usopp, who is known to be a skilled liar, tricks one of the mercenaries into revealing their plan. The other members of the Usopp Pirates, including Nami, Zoro, and Sanji, join in and help defeat the mercenaries. Together, they are able to overcome the fighters sent by Kuro.

Meanwhile, Luffy faces off against Captain Kuro himself. The two engage in an intense battle, with Luffy using his rubber powers to fight against Kuro's deadly martial arts abilities. In the end, Luffy is able to defeat Kuro and save Kaya.

With Kuro out of the picture, Kaya is able to reclaim her wealth and her mansion. She is relieved and grateful to the Usopp Pirates for rescuing her. Meanwhile, the Straw Hat Pirates decide to set sail on their new adventure, leaving Kaya and her island behind.

Overall, "Protect Kaya! The Usopp Pirates' Great Efforts!" is a thrilling and action-packed episode that showcases the importance of friendship and loyalty. The Usopp Pirates show that even though they are a small group, their efforts can make a big difference in the lives of others. The episode also sets the stage for future adventures with the Straw Hat Pirates.