The Straw Hats, with Kureha’s assistant Tony Tony Chopper, finally arrive at Arabasta, which is on the verge of civil war. Vivi must reach the rebels and tell them the real cause behind the conflict, but Crocodile, leader of Baroque Works and one of the Seven Warlords of the Sea, will not just stand by and watch. In the end, Baroque Works, marine forces, pirates, the royal guards, and the rebel army clash in a battle that will determine the fate of the country itself.


One Piece: Season 4
Overview
Episodes
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4x92
Alabasta's Hero and a Ballerina on the Ship!
Crocodile appears to stop rampaging pirates. Luffy and his crew meet Mr. 2 Bon Clay who shows off his devil fruit power and Vivi sees a…
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4x93
Off to the Desert Kingdom! The Rain-Summing Powder and the Rebel Army!
Luffy separates from the rest of the crew, right after arriving at Alabasta's port city of Nanohana. The crew dons disguises while Luffy learns of Dance…
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4x94
The Heroes Reunion! His Name is Fire Fist Ace!
While in Nanohana, the Straw Hats encounter Smoker and Tashigi. A powerful pirate named Portgas D. Ace appears.
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4x95
Ace and Luffy! Hot Emotions and Brotherly Bonds!
Ace fights Smoker while the Straw Hats run for their ship. Luffy reunites with his brother, who has joined the Whitebeard Pirates after leaving home, and…
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4x96
Erumalu, The City of Green and the Kung Fu Dugongs!!
Ace decides to travel with the Straw Hats, as he is hunting for a man known as Blackbeard.
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4x97
Adventure in the Country of Sand! The Monsters that Live in the Scorching Land!
After leaving Erumalu, the Straw Hats plus Vivi & Ace continue through the desert, facing the many dangers of it.
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4x98
Enter the Desert Pirates! The Men Who Live Freely!
Nami and Vivi found themselves an easier way to travel in the desert and leave all men behind.
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4x99
False Fortitude! Camu, Rebel Soldier at Heart!
After hearing that a small village has fake Rebel Army bodyguards that have been keeping peace, Vivi asks the men of the crew to test if…
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4x100
Rebel Warrior Koza! The Dream Vowed to Vivi!
Still trekking through the Alabasta desert, the crew beats up a giant desert scorpion for lunch, while Vivi tells Nami about her past and her friendship…
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4x101
Showdown in a Heat Haze! Ace vs. the Gallant Scorpion!
Ace fights against a bounty hunter, who claims to have defeated Blackbeard, although this was a lie to lure Ace out and challenge him in order…
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4x102
Ruins and Lost Ways! Vivi, Her Friends, and the Country's Form!
Zoro, Chopper and Luffy manage to get themselves lost and stumble across some huge underground ruins.
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4x103
Spiders Café at 8 o'Clock! The Enemy Leaders Gather!
Baroque Works plan starts to take effect, and for that, the Number Agents gather to meet Mr. 0. Meanwhile, the crew finds out that the Rebel…
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4x104
Luffy vs. Vivi! The Tearful Vow to Put Friends on the Line!
In Yuba, Luffy learns that Toto was entrusted by Cobra to watch over the land and figures out a way to stop the sandstorm.
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4x105
The Battlefront of Alabasta! Rainbase, the City of Dreams!
After the struggle, Vivi decides to go after Crocodile with the Straw Hats. The crew travels to the city of Rainbase, but run afoul of Smoker…
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4x106
The Trap of Certain Defeat! Storming Raindinners!
Most of the Straw Hats, along with Smoker, are trapped by Crocodile. Vivi reunites with the royal guardian Pell, but is captured by Miss All-Sunday. Crocodile…
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4x107
Operation Utopia Commences! The Swell of Rebellion Stirs!
Baroque Works' plan to take over Alabasta is set in motion.
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4x108
The Terrifying Banana Gators and Mr. Prince!
Most of the Straw Hats are helplessly trapped as Vivi tries desperately to get the key to their cage. but fails. Crocodile is contacted by someone…
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4x109
The Key to a Great Comeback Escape! The Wax-Wax Ball!
The identity of "Mr. Prince" is revealed.
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4x110
Merciless Mortal Combat! Luffy vs. Crocodile!
After escaping from Rain Dinners, the Straw Hats and Vivi cross the desert to Alubarne, where the final battle will take place.
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4x111
Dash For a Miracle! Alabasta Animal Land!
Luffy is left for dead by Crocodile, but is helped by the mysteríous Miss All-Sunday. The rest of the Straw Hats reach Alubarna.
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4x112
Rebel Army vs. Royal Army! Showdown at Alubarna!
The revolution is on the verge of starting and the crew comes out with a plan that could stop it.
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4x113
Alubarna Grieves! The Fierce Captain Karoo!
Vivi tries to call out to the Rebel Army, but fails because of a Baroque Works infiltrator in the Royal Army interferes.
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4x114
Sworn on a Friend's Dream! The Battle of Molehill, Block 4!
Things look hopeless for Usopp & Chopper as they continue to suffer from every attack that the Mr.4 team makes. However, the tides may be beginning…
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4x115
Big Opening Day Today! The Copy-Copy Montage!
Albeit severely beaten and bruised, Usopp and Chopper have finally defeated the Mr.4 team. However, Mr. 2 has figured out Sanji's weakness.
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4x116
Transformed into Nami! Bon Clay's Rapid-Fire Ballet Kenpo!
Though Mr. 2 discovers Sanji's weakness, Sanji still defeats his opponent after an evenly-matched fight. Meanwhile, before Vivi could give the word to blow up the…
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4x117
Nami's Cyclone Advisory! Clima Takt Burst!
Nami faces off against Miss Doublefinger and tries to figure out her new weapon that Usopp made, the Clima-Tact.
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4x118
Secret Passed Down in the Royal Family! The Ancient Weapon Pluton!
While Crocodile reveals to Vivi about the ancient weapon Pluton, Nami attempts to defeat Miss Doublefinger with her most powerful attack: The Tornado Tempo.
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4x119
Secret of Powerful Swordplay! Ability to Cut Steel and the Rhythm Things Have!
While Miss. Doublefinger's fight with Nami was challenging, Zoro is having an even more difficult time fighting Mr.1: A man who can change his entire body…
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4x120
The Battle is Over! Koza Raises the White Flag!
When Vivi reveals Crocodile's plan to Koza, he attempts to stop the fighting, but is shot. Crocodile reveals that he has set up a massive bomb…
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4x121
Where Vivi's Voice Gets Heard! The Hero Descends!
As Koza tries to stop the Rebel Army, both sides are once more fighting due to the intervention of Baroque Works. Vivi is thrown to her…
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4x122
Sand Croc and Water Luffy! The Second Round of the Duel
Luffy fights Crocodile with more success this time by using water, but still loses this round. Meanwhile, the other Straw Hats hurry to locate the bomb…
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4x123
That Looks Croc-ish! Luffy, Run to the Royal Tomb!
Crocodile joins Robin in the tomb, and orders her to translate the Poneglyph. Robin tells him that Pluton was not mentioned and that it was only…
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4x124
The Nightmare Draws Near! This is the Sand-Sand Clan's Secret Base!
Luffy fights with Crocodile by using blood on his fists. Meanwhile Vivi finds the bomb, and calls the Straw Hats together.
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4x125
Magnificent Wings! My Name is Pell, Guardian Deity of the Country!
Vivi finds the bomb inside of the clock tower, but the Mr. 7 pair of Baroque Works are there to protect it. Vivi defeats them, but…
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4x126
I Will Surpass You! Rain Falls in Alabasta!
Luffy defeats Crocodile by punching him through solid bedrock. When Crocodile falls, the rain-drops calm the soldiers.
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4x127
A Farewell to Arms! Pirates and Different Ideas of Justice!
Now that the battle has ended, the outcome is tallied. Igaram appears with proof of Cobra's innocence, as well as Koza telling everything. Tashigi and Smoker…
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4x128
The Pirates' Banquet and Operation Escape from Alabasta!
Luffy is rescued from the collapsed tomb where he fought Crocodile and brought into Cobra's palace to rest. When he awakens, a magnificent banquet is thrown…
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4x129
It All Started On That Day! Vivi Tells the Story of Her Adventure!
It's the day for Vivi's speech and her decision whether or not to continue to be with the Straw Hats. Meanwhile, Bon Kurei and his crew…
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4x130
Scent of Danger! The Seventh Member is Nico Robin!
The Marines fail again to catch the Straw Hats. After escaping from Marines, Nico Robin (Ms. All Sunday) appears from inside of Straw Hats ship. She…