Season 4 of One Piece is currently available in United States across 4 streaming offer(s).

One Piece – Season 4 (2026)

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TMDB7.6

39 episodes

24m

One Piece - Season 4 follows the Straw Hat Pirates as they reach the desert kingdom of Arabasta. Their primary goal is to help Princess Vivi stop a looming civil war. This conflict is...

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One Piece – Season 4 Plot Summary

In One Piece – Season 4, the Straw Hat Pirates, now joined by the reindeer doctor Tony Tony Chopper, arrive in the arid country of Arabasta. Their companion, Princess Nefertari Vivi, seeks to prevent a full-scale civil war engulfing her homeland. The conflict pits the Royal Army against a rebel force, both manipulated by Sir Crocodile, one of the Seven Warlords of the Sea and head of Baroque Works. Crocodile uses a special powder to create false droughts, fueling public discontent. The Straw Hats engage various Baroque Works agents across Arabasta, attempting to expose Crocodile’s plot and reach the capital, Alubarna, before a major battle erupts. The season culminates in a massive clash involving the Royal Army, the Rebel Army, Baroque Works, and the Straw Hats, all fighting for the fate of the country.

One Piece – Season 4 Cast, Characters, and Arc

This season focuses on the Straw Hat Pirates’ engagement with the Alabasta Arc. Key characters include Monkey D. Luffy (voiced by Mayumi Tanaka), the captain with rubber abilities; Roronoa Zoro (voiced by Kazuya Nakai), the swordsman; Nami (voiced by Akemi Okamura), the navigator; Usopp (voiced by Kappei Yamaguchi), the sniper; and Sanji (voiced by Hiroaki Hirata), the cook. Tony Tony Chopper (voiced by Ikue Ōtani) officially joins the crew during this period. Princess Nefertari Vivi becomes a central figure, guiding the Straw Hats to her kingdom. Sir Crocodile serves as the main antagonist, leading Baroque Works with his Sand-Sand Fruit powers. The season depicts the Straw Hats fighting Crocodile’s agents and attempting to save Arabasta from internal destruction.

Where to Watch One Piece – Season 4

One Piece – Season 4 is available for streaming in the US. Viewers can find this season on Crunchyroll, Netflix, and Netflix Standard with Ads. It is also available for digital purchase on Amazon Video. Availability may vary by region and subscription plan. The season originally aired in Japan from December 2001 to October 2002. English dubs were later released on DVD starting in 2009. Check the respective platforms for current access details and any associated costs.

How One Piece – Season 4 Fits the Series

One Piece – Season 4 is a critical part of the larger One Piece narrative, primarily covering the Alabasta Arc. This arc marks the Straw Hat Pirates’ first major conflict with a Warlord of the Sea, Sir Crocodile, significantly raising the stakes for their journey through the Grand Line. The season is notable for Tony Tony Chopper officially joining the crew, expanding the group’s medical capabilities. It also deeply explores themes of political corruption, loyalty, and the consequences of war. The events in Arabasta solidify the Straw Hats’ reputation and their commitment to protecting innocent people, even in unfamiliar territories. This arc sets precedents for future encounters with powerful enemies and the crew’s growing bonds. The season concludes with the introduction of a new crew member, Nico Robin, who was formerly Miss All-Sunday of Baroque Works.

Is One Piece – Season 4 Safe to Watch? (Age Rating Guide)

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For verified credits, release details, or official resources, visit IMDb and Official Site.

Director	Not available
Main Cast	Mayumi Tanaka, Kazuya Nakai, Akemi Okamura, Kappei Yamaguchi, Hiroaki Hirata
Release Year	Not available
Genre	Not available

Frequently Asked Questions

What is One Piece – Season 4 about?

Where can I watch One Piece – Season 4?

One Piece – Season 4 is available on Amazon Video, Crunchyroll, and Netflix.

Episode 92 December 9, 2001 24m

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 shocking sight.

Episode 93 December 16, 2001 24m

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 Powder.

Episode 94 December 23, 2001 24m

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.

Episode 95 January 6, 2002 24m

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 is searching for a former crewmate named Blackbeard who killed a fellow member.

Episode 96 January 13, 2002 24m

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.

Episode 97 January 20, 2002 24m

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.

Episode 98 January 27, 2002 24m

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.

Episode 99 February 3, 2002 24m

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 they're worthy of staying.

Episode 100 February 10, 2002 24m

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 with Kohza.

Episode 101 February 17, 2002 24m

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 to inspire his children to follow their dreams.

Episode 102 February 24, 2002 24m

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.

Episode 103 March 2, 2002 24m

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 Army has moved out of Yuba and headed to Katorea, and the rebel leader Kohza is determined to attack.

Episode 104 March 10, 2002 24m

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.

Episode 105 March 17, 2002 24m

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 and Tashigi.

Episode 106 March 24, 2002 24m

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 reveals his invincible Devil Fruit power.

Episode 107 April 14, 2002 24m

Operation Utopia Commences! The Swell of Rebellion Stirs!

Baroque Works' plan to take over Alabasta is set in motion.

Episode 108 April 21, 2002 24m

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 known as "Mr. Prince."

Episode 109 April 28, 2002 24m

The Key to a Great Comeback Escape! The Wax-Wax Ball!

The identity of "Mr. Prince" is revealed.

Episode 110 May 5, 2002 24m

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.

Episode 111 May 12, 2002 24m

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.

Episode 112 May 19, 2002 24m

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.

Episode 113 June 2, 2002 24m

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.

Episode 114 June 9, 2002 24m

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 to turn as Usopp learns what it truly means to be a man.

Episode 115 June 16, 2002 24m

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.

Episode 116 June 23, 2002 24m

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 palace, Crocodile appears.

Episode 117 June 30, 2002 24m

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.

Episode 118 July 14, 2002 24m

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.

Episode 119 July 21, 2002 24m

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 into steel - something that Zoro cannot cut. As Zoro nears death, he must discover the secret to "the breath of all things".

Episode 120 August 4, 2002 24m

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 in the city.

Episode 121 August 11, 2002 24m

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 certain death when Luffy saves her and challenges Crocodile to a second round.

Episode 122 August 18, 2002 24m

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 before it goes off. Nico Robin forces the king to take her to the tomb where the Pluton Poneglyph is hidden.

Episode 123 August 25, 2002 24m

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 about history, but Crocodile figures out that she was lying and stabs her in response. When Luffy recovers from the last round of fighting, he chases after Crocodile into the tomb.

Episode 124 September 1, 2002 24m

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.

Episode 125 September 8, 2002 24m

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 she realizes the bomb cannot be stopped so easily. It has a timer, and right before it blows up, Pell shows up and takes it into the atmosphere, where he sacrifices himself to save Alabasta.

Episode 126 September 15, 2002 24m

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.

Episode 127 October 6, 2002 24m

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 both are rewarded for taking on Crocodile, but neither one of them believes that is right, considering the Straw Hat pirates did all the work.

Episode 128 October 6, 2002 24m

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 for the pirates, then, the Straw Hats are invited to enjoy the hot spring steam room inside the palace.

Episode 129 October 20, 2002 24m

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 attempt to protect the Straw Hats from Hina.

Episode 130 October 27, 2002 24m

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 manages to persuade the crew to let her join. Pell is seen at the end standing over his own grave.