Brook tries to help his new crewmates because he fears that otherwise he will not be of use. Robin tells him her story of Water 7, and he recovers his confidence.
The Straw Hat Pirates are about to reach the Red Line, but a terrible storm delays them. The log pose is pointing downwards and the crew needs more information to get to Gyojin Island (English dubbing: Fishman Island).
Camie and Pappag introduce themselves to the Straw Hats, who then later find out that their fishman friend has been kidnapped by Iron Mask Duval and the Macro Gang.
The Straw Hat Pirates do battle with the Flying Fish Riders and Macro Fishman Pirates. The stakes rise when Duval reveals himself, and exactly who his grudge is against: Sanji.
Duval reveals that he was once a small-time bandit until Sanji's wanted poster came to light. Since then, he hid his face with the iron mask until he could get revenge on Sanji.
After landing on the Sabaody Archipelago, the Straw Hats begin searching for a man Hatchan knows who can coat their ship so that they can continue onto Fishman Island.
Departing from Shakky's Rip-off Bar, Luffy's group attempt to search for Rayleigh but is distracted by the Sabaody Park. Zoro is disrespectful to Saint Charlos, causing him to be shot at.
Duval and his crew arrive on the Archipelago and start gathering the Straw Hats up to bring them to the Human Auctioning House, where the kidnappers have brought Camie.
After Luffy punches Charlos, the guards begin to attack the Straw Hats, and most of the observers except for Charlos' family and Kid's and Law's crews evacuate.
Luffy, Law and Kid's crews join the fight and defeat the rest of the Marines outside the Auction House. The three captains promise to meet and fight in the New World.
Upon arriving back at Shakky's Bar, Silvers Rayleigh reveals to the Straw Hats that he was the first mate of the legendary Gol D. Roger and also reveals the truth about his crew's dismissal.
Admiral Kizaru appears at the Archipelago and demonstrates his mysterious light abilities before taking on the Supernova Basil Hawkins while Urouge and X Drake fight a Pacifista.
The Straw Hat Pirates fight one of the Pacifistas, and while it does not have Kuma's Devil Fruit powers, it is still able to withstand their strongest attacks.
In an alternate universe set in Edo period Japan, the Mikoshi (portable shrine) race is about to take place, the winner of which receives Beli1,000,000, and Boss Luffy and his friends recruit Franky to build them a mikoshi.
Robin reveals Brook's past to Luffy and his friends, and they decide to help him. Brook is captured by Thriller LTD, but Luffy and Zoro arrive to help him escape.
Luffy looks at Boa Hancock's (English dubbing: Snake Princess) back and notes that he has seen what was on it before. Hancock tries but fails to turn him to stone.
Hancock decides to test Luffy by giving him an ultimatum: either he gets a ship so he can leave the island while the girls remain statues or she changes them back and Luffy finds another way to the archipelago.
Following a party, Luffy learns from Nyon that Hancock is a Shichibukai, and that they have been called together as the Marines is launching an all-out offensive on Whitebeard.
Vice Admiral Garp talked proudly to Ace at Impel Down about some of Luffy's actions, and mentions that they both have the blood of a world class criminal.
Buggy and Luffy fight their way through to the entrance of Level 2 by going through Level 1, Crimson Hell, where the lowest ranking criminals are held.