As word of the Straw Hat resurrection spreads through the Navy, Luffy and his crew get acclimated to their underwater environment, and Franky reveals the startling identity of the man who protected their ship!

The Caribou Pirates attack the Straw Hats. While Caribou manages to get on the Thousand Sunny, the rest of his crew gets pulled away by Mohmoo, who gets frightened when he recognizes the Straw Hats from his time in Arlong Park. Caribou is left alone and, as a result, is captured by the Straw Hats. The Straw Hats come across the Kraken, which destroys the ship of the Caribou Pirates, who returned to save their captain, and then attacks Thousand Sunny. The Straw Hats manage to avoid its attacks and Luffy, along with Zoro and Sanji, are getting ready to fight it.

After their quarrel with the Kraken, the Straw Hats find themselves in hot water as Luffy, Zoro, and Sanji turn up missing, and the rest of the crew runs short on air!

The Flying Dutchman shows up and Vander Decken tells Wadatsumi to crush the Thousand Sunny, but then the Kraken beats Wadatsumi. The volcano erupts, and the pirates run from it. Surume jumps off a cliff and some big stones are about to crush them but Usopp stops them for a while with his new move, called Sargasso. But, when they are celebrating their survival, a rock hit Surume's head, made it faints as they are descending to the depth of the cliff. At the bottom of the cliff, they find Fishman Island but when they are about to enter, they are stopped by a group of sea monsters and someone riding it.

The Straw Hat Pirates encounter Hammond, some sea-beasts and other fishmen from the New Fishman Pirates. Franky launches the Coup de Burst towards Fishman Island to escape the pirates. Unfortunately the Straw Hats get separated from the Sunny and from each other. Luffy wakes up after a while only to reunite with Keimi, Usopp, Sanji and Chopper. They leave Keimi's house and go to a higher level of the island where they meet other mermaids. Meanwhile, Hammond informs their leader about the Straw Hats entering Fishman Island.

When Sanji gets up close and personal with a mesmerizing mermaid, his extreme fondness for the female form lands him in a life and death situation. Could the Straw Hat chef die from a nosebleed?!

As blood donors are finally found, the recovering Sanji stays at the Mermaid Cafe while Luffy, Usopp and Keimi meet Pappug and Brook. The five of them head for Pappug's home. In the meantime, Ishilly and her friends vanish after opening the barrel that was washed up together with the Straw Hats and the episode ends with Madam Sharley predicting that Luffy would destroy Fishman Island.

A trio of unsuspecting mermaids find themselves in hot water after releasing a bad guy from his barrel of a prison. Over at the royal palace, Luffy gets up close and personal with the Mermaid Princess!

Luffy’s lightning reflexes spare the Mermaid Princess from a grisly death, Neptune’s army attempts to apprehend the Straw Hats, and Captain Vander Decken forges a sinister undersea alliance!

With their backs against the wall, the Straw Hats are forced to take King Neptune and his men hostage. On the other side of the palace, Luffy and the Mermaid Princess make plans to visit the Sea Forrest!

Luffy accidentally “kidnaps” the Mermaid Princess, an old friend issues a grave warning to Chopper and Sanji, and the New Fish-Man Pirates prepare for a raid on Ryugu Palace!

Captain Vander Decken and Hordy Jones manage to successfully breach the defenses of Ryugu Palace. Meanwhile, Jimbei waits patiently for Luffy to arrive at the Sea Forest.

Robin ventures into the forest in search of ancient secrets, Zoro takes to the water for a slicing, dicing showdown with Hordy Jones, and Luffy is branded a royal kidnapper by an angry mob of fish folk!

Luffy, Chopper, and Sanji are taken prisoner by a fish mob just as Vander Decken launches an attack the princess! Elsewhere, Zoro continues his battle with Hordy, and Nami hitches a ride on a mermaid to escape the crumbling palace!

Zoro and Neptune fight bravely, but they’re no match for Hordy and his pill-popping minions. Back at the ship, Luffy reunites with Jimbei, who reveals something sinister about his past.

The New Fish-Man Pirates continue their bloody and violent uprising, and Jimbei begins the story of how he unleashed the monster known as Arlong on the unsuspecting citizens of the East Blue.

Jimbei continues his story with tales of fish-men taken as slaves, Queen Otohime’s fierce devotion to her people, the legend of Fisher Tiger, and the sinister rise of Arlong.

Arlong’s violent tendencies are condemned by Fisher Tiger, and the arrival of a young human girl teaches the Fish-Man Pirates a lesson in compassion.

Toriko and Komatsu are seen fishing when Komatsu catches a Harusame. After defeating it, Luffy suddenly comes out of the Harusame's mouth and surprises Toriko and Komatsu.

The great pirate Fisher Tiger keeps his promise to a young slave girl, but the adults in her village are determined to make him pay for his act of honor.

After the death of Fisher Tiger, Arlong's abuse of humans lands him in jail, Jimbei becomes the captain of the Sun Pirates, and Queen Otohime's passion to see her vision come true is renewed!

Tensions run high when a slave-owning Celestial Dragon washes up on Fish-Man Island. His former captives cry for out for blood, but Queen Otohime sees it as a chance to mend fences between the gilled and non-gilled!

After an agonizing absence, Queen Otohime returns to her people with exciting news. Unfortunately, a horrific act of violence derails the queen’s mission and changes life on Fish-Man Island forever.

Jimbei reaches the heartbreaking conclusion in the story of Queen Otohime, Nami does something completely unexpected, and Hordy Jones makes a foreboding appearance!

Hordy announces his sinister plans for Fish-Man Island. Luffy and Shirahoshi are ready to fight, but Jimbei wants to wage this war on his own!

Luffy and Jimbei come to blows over how to handle Hordy’s uprising. Back at the palace, Brook embarks on an out of body experience with hopes of saving his mates!

Jimbei and Luffy continue their standoff, the New Fish-Man pirates go on a rampage, and Hordy begins to experience startling side effects from his pill-popping habit!

Hordy’s rampant use of the energy steroid makes him bigger, stronger, and scarier than ever before! The Fish-Man princes join the battle, but even they may not be strong enough to stop Hordy’s onslaught!

Jimbei and Shirahoshi are captured by the enemy, and Hordy makes a shocking revelation to the population of Fish-Man Island!

Shirahoshi reveals that she knew the truth about her mother’s murder all along, and Luffy makes a bone-crushing entrance when the princess needs him most!

Hordy announces his plan for turning humans into slaves, the people of Fish-Man Island throw their support behind a new champion, and Luffy amazes even his own friends!

Luffy and the gang show off how much stronger they’ve become by issuing a brutal beat down to Hordy and his ferocious Fish-Man Pirates! Can anything stop the Hats?

Hordy’s men keep attacking, but the Straw Hats have new weapons at their disposal! Franky unleashes the fury of the Black Rhino, and Luffy turns the tables on Hordy with a little help from his Kraken!

Franky dazzles Usopp and Chopper by transforming into a gigantic fighting robot, Hordy tries to blackmail the Kraken, and Luffy introduces his fist to the Fish-man’s face!

Luffy shows off even more new powers as he brutally pummels Hordy, but the main attraction proves to be an ancient and immense pirate ship that’s heading straight for Fish-Man Island!

Shirahoshi summons the courage to risk everything to save her world, Luffy puts his own life in peril by venturing into the ocean, and Hordy’s devious nature fully comes to the surface.

Luffy sets the stage for a final battle with Hordy, Sanji kicks a giant in defense of Nami’s honor, and Zoro puts his blades to the ultimate test against a steroid-powered fighting fish!

While Luffy and Shirahoshi try to prevent Fish-Man Island from being crushed, the rest of the Straw Hats square off against the meanest Fish-Man Pirates in the deep blue sea!

Luffy is the only one who can stop Hordy, but he’ll need air to survive the fight, so Shirahoshi’s big brother risks his own life in heroic attempt to get Luffy a bigger bubble!

While the rest of the Straw Hats continue to fight bravely, Luffy tries to find a way to save the island, and the horrible truth about Hordy’s hatred for humans is finally revealed!

Hordy’s twisted past takes center stage in a Fish-man flashback. Meanwhile, Shirahoshi’s brother begs Luffy to save his beloved homeland and wipe out the anti-human element!

Luffy’s fist of fire puts Hordy down for the count, and the rest of the Straw Hats try to make short work of the remaining Fish-Man Pirates. Meanwhile, a very big boat looms overhead!

While the rest of the Straw Hats try to make short work of their enemies, Luffy summons the strength for one last brutal attack on Hordy. Now, about that giant boat…

After defeating Hordy, Luffy turns his attention to stopping the Noah from crushing Fish-Man Island. Straw Hats and Fish-Men alike watch as Luffy tries to obliterate a boat with a barrage of brutal blows!

Fish-Man Island was saved by the timely arrival of the Sea Kings, but all is not well. Luffy lost a lot of blood in his battle with Hordy, and fish-to-human transfusions are strictly forbidden!

Jimbei must decide whether or not to join the Straw Hats, and the grateful citizens of Fish-Man Island host a fabulous banquet in honor of their human heroes!

Luffy and his crew learn of epic battle between Aokiji and Akainu, a forgotten foe tries to kidnap the mermaid princess, and Hordy’s gang finally gets what’s coming to them!

When Luffy, Zoro, and Sanji stumble upon a couple of Big Mom’s henchmen extorting sweets from the peaceful people of Fish-Man Island, the Straw Hats make a new – and very powerful – enemy!

The Straw Hats prepare to depart Fish-Man Island, a lion and a caribou come to blows over booby-trapped treasure, and Vice Admiral Smoker makes his presence felt in the New World!

Luffy and his crew bid farewell to their new friends before setting off in search of the greatest adventures the New World has to offer!

Luffy and Usopp’s extreme deep sea fishing adventure lands the crew in the middle of a deadly whirlpool, but an unexpected encounter with a pod of giant whales may bail the Straw Hats out of hot water!

Luffy’s arrival in the New World is marked by violent weather and the discovery of a tiny stowaway. When the Straw Hats agree to help their new friend, it could lead to big trouble with the Marines!

Nami hatches a plan to save Lily’s father, but the arrival of an ex-marine madman throws a monkey wrench into the rescue mission.

Luffy and Zoro find themselves locked in battle with their latest foes, but Nami’s knowledge of the sea may be the key to escaping this scrum alive!

Shuzo and his clan are in hot pursuit of the Straw Hats after using a Vivre Card to track them. Shuzo puts up a good fight displaying strong Haki, but Luffy and Lily are able to combine attacks in a surprising way to level the playing field!

A desperate cry for help leads the Straw Hats to Punk Hazard, an island engulfed in flames and inhabited by a mythic beast that could make short work of Luffy and the gang!

Luffy, Robin, Usopp, and Zoro face down a powerful dragon as the battle heats up on Punk Hazard! And Luffy finds himself on the dragon's back during the attack, a mysterious discovery adds to the mystery of the island! Meanwhile, danger closes in for the rest of the Straw Hats on the Sunny...