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Season guide

One Piece: Impel Down & Marineford

101 episodes Updated Oct 3, 2026

Luffy puts finding his crew on hold in order to rescue his brother Ace from the underwater prison Impel Down. With the help of Boa Hancock, he successfully infiltrates the facility, though fulfilling his objective and escaping the hellish prison proves to be a difficult task. After failing to reach Ace before he is transferred, Luffy and his companions manage to escape from Impel Down and travel to Marineford, which

Previously on One Piece

Season 13 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Luffy chooses to put finding his crew on hold in order to rescue his brother Ace.
  • ⚡ Ace is imprisoned in the underwater facility known as Impel Down.
  • ⚡ Boa Hancock provides assistance to Luffy, allowing him to infiltrate the prison.
  • ⚡ Ace is transferred away from Impel Down, prompting Luffy and his companions to travel to the Marine Headquarters base at Marineford.
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Season overview

Luffy puts finding his crew on hold in order to rescue his brother Ace from the underwater prison Impel Down. With the help of Boa Hancock, he successfully infiltrates the facility, though fulfilling his objective and escaping the hellish prison proves to be a difficult task. After failing to reach Ace before he is transferred, Luffy and his companions manage to escape from Impel Down and travel to Marineford, which serves as the base of Marine Headquarters. Facing high odds, the imminent threat of Whitebeard, and pirates harboring ulterior motives to overthrow the Emperor, Luffy struggles to hold his own in this titanic clash of powers.

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Season 13 Episodes

Episode Guide

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Binge Efficiency Engine

Season 13: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

Time Saved 0.4h Skipping 1 filler episode
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91%
Mytharc (8): Crucial lore & season climaxes
Core (92): Character development & subplots
Side Quest (1): Standalone / filler
S13·E422 Core

A Deadly Infiltration! The Underwater Prison Impel Down

Oct 18, 2009 · 24 min

Luffy and Boa arrive at Impel Down, but only thirty-three hours remain until Ace's execution. To save him, the Snake Princess must find a way to hide Luffy during her full-body sea

S13·E430 Core

A Warlord in Prison! Jimbei, the Honorable Pirate

Dec 13, 2009 · 24 min

Luffy struggles to stay a step ahead of a prison patrol made up of hungry lions and poisonous scorpions! Meanwhile, Ace spends what could be his final hours swapping stories with a

S13·E432 Core

The Unleashed Swan! A Reunion with Bon Clay

Dec 27, 2009 · 24 min

Boa Hancock uses her ample assets to buy some private time for a clandestine chat with Ace. Meanwhile, Luffy needs help from a graceful friend to escape the jaws of a hungry Sphinx

S13·E435 Core

Mighty Magellan! Bon Clay Bugs Out

Jan 24, 2010 · 24 min

Warden Magellan is a monster of a man with a penchant for poisoning prisoners. To rescue Ace, Luffy must go toe to toe with this toxic terror, but how do you defeat a foe who's dea

S13·E436 Core

The Showdown Has Come! Luffy's Desperate Last Attack!

Jan 31, 2010 · 24 min

Luffy’s daring assault on the venomous warden of Impel Down leaves him struggling to stand up, but despite the lethal poison breaking down his body, the rubber-man kicks his rescue

S13·E437 Core

For His Friend! Bon Clay Goes to the Deadly Rescue!

Feb 7, 2010 · 24 min

While Luffy hovers perilously on the verge of death, Bon Clay embarks on a suicidal rescue mission plagued by sub-zero temperatures and bloodthirsty wolves with a supremely savage

S13·E438 Core

A Paradise in Hell! Impel Down Level 5.5!

Feb 14, 2010 · 24 min

No existing antidote can save Luffy from the poison coursing through his veins, yet Bon Clay refuses to give up. His final, fleeting hope is a mysterious miracle-worker rumored to

S13·E439 Core

Luffy's Treatment Begins! Ivan-san's Miraculous Power!

Feb 21, 2010 · 24 min

Bon is overjoyed to hear that Luffy is still alive, but his happiness quickly turns to shock when he learns that Ivan’s agonizingly painful “Healing Hormones” will cost the rubber-

S13·E440 Core

Believe in Miracles! Bon Clay's Cries from the Heart

Feb 28, 2010 · 24 min

Ace is scheduled to be executed in a matter of hours, and Luffy’s still hovering on the verge of death. It will take a miracle to save them both, but Bon would rather die than give

S13·E441 Core

Luffy's Back! Ivan-san Begins the Breakout Plan!

Mar 7, 2010 · 24 min

Luffy miraculously survived his brush with death, but he’s far too weak to finish rescuing Ace. Ivan is reluctant to lend a hormonal hand to the doomed rescue mission – until he le

S13·E443 Core

The Ultimate Team Has Formed! Shaking Impel Down!

Mar 21, 2010 · 24 min

Luffy’s desperate attempt to rescue Ace is bolstered by two powerful new allies: the murderous Crocodile and the honorable fishman Jinbei. Meanwhile, Ivan sparks a prison riot to c

S13·E444 Core

Even More Chaos! Here Comes Blackbeard Teech!

Mar 28, 2010 · 24 min

Luffy and his gang of outlaws cause a commotion on Level Four, Blackbeard’s arrival leads to the release of the prison’s most feared inmate, and Ace gazes upon the great blue sky f

S13·E446 Core

No Price Too High! Serious Hannyabal!

Apr 11, 2010 · 24 min

Luffy’s bone-crushing battle with the Vice Warden of Impel Down is interrupted by the sudden appearance of Blackbeard. When the rubber-man hears what the warlord has to say – heads

S13·E447 Core

Jet Pistol of Anger! Luffy vs. Blackbeard!

Apr 18, 2010 · 24 min

Even in Second Gear, Luffy is no match for Blackbeard’s vortex, but the rubber-man rebounds by knocking out a Demon Guard with one ferocious pistol-punch. Elsewhere, Warden Magella

S13·E448 Core

Stop Magellan! Ivan-san's Esoteric Technique Explodes

Apr 25, 2010 · 24 min

Ace is to be executed in a matter of hours, and Magellan’s toxic breath is singeing the back of Luffy’s neck. Ivan uses a devastating Death Wink to buy some time, but the warden’s

S13·E449 Core

Magellan's Tricky Move! A Foiled Escape Plan!

May 2, 2010 · 24 min

Buggy and the others can taste freedom on just the other side of the door to Impel Down, but their escape is thwarted by Magellan's secret plan. Meanwhile, Luffy has a chance to fa

S13·E451 Core

Come, Final Miracle! Break Through the Gate of Justice!

May 16, 2010 · 24 min

Luffy and his merry band of escapees are safely onboard the rescue ship, but they’re not out hot water just yet. A fleet of marines is bombarding them with cannon balls, and an imp

S13·E452 Mytharc

To the Navy Headquarters! Off to Rescue Ace!

May 23, 2010 · 24 min

Luffy and Ivan mourn the loss of Bon Clay, and Captain Buggy’s reputation gets a boost when a phone call from the Marines reveals the secrets of his past.

S13·E460 Core

A Vast Fleet Appears! Here Come the Whitebeard Pirates!

Aug 1, 2010 · 24 min

Flashbacks reveal the agonizing sacrifice made by Ace’s mother in order save his life – and the secret behind his connection to Luffy. Back in the present, Whitebeard makes an unex

S13·E461 Mytharc

The Beginning of the War! Ace and Whitebeard's Past!

Aug 8, 2010 · 24 min

As a massive seaquake rocks Marineford, Ace recalls the ups and downs of his life as a pirate, including his first encounter with Whitebeard – and the unthinkable betrayal that led

S13·E463 Core

An All-Consuming Inferno!! Admiral Akainu's Power!

Aug 22, 2010 · 24 min

Fire meets ice as mythical warriors, erupting admirals, legendary pirates, and a giant giant go head to head in the biggest, baddest battle of all time! There’s only one thing miss

S13·E465 Core

Justice for the Winners! Sengoku's Strategy in Action!

Sep 5, 2010 · 24 min

In the wake of Little Oars Junior’s tragic defeat, Admiral Sengoku hatches a devious plan to speed up the countdown to Ace’s execution. The situation looks beyond bleak until a her

S13·E469 Core

Kuma's Transformation! Ivan-san's Blow of Anger!

Oct 3, 2010 · 24 min

A gift from Boa Hancock and Ivan-san’s Galaxy Wink get Luffy closer to Ace than ever, but a sword-wielding foe from the past threatens to derail the rescue mission!

S13·E472 Core

Akainu's Plot! Whitebeard Entrapped!

Oct 17, 2010 · 24 min

Whitebeard is betrayed – and brutally stabbed – by one of his own men! In the wake of this unthinkable act of treason, allegations about the legendary pirate bring the battle to a

S13·E478 Core

To Live Up to a Promise! Luffy and Coby Collide!

Dec 5, 2010 · 24 min

Luffy makes short work of face from his past, and Whitebeard struggles to withstand the full force of the Marine onslaught. With the executioner’s swords hovering above Ace’s head,

S13·E479 Core

The Scaffold at Last! The Way to Ace Has Opened!

Dec 12, 2010 · 24 min

Whitebeard orders his men to help Luffy clear a path to the execution scaffold, but someone close to the Rubber-man rises up to derail the rescue mission at the last second!

S13·E480 Core

Each on Different Paths! Luffy vs. Garp!

Dec 19, 2010 · 24 min

Luffy must defeat the man who taught him how to fight – his own grandfather – in order to save Ace. Battling his own flesh and blood won’t be easy, but a waxy ally is there to prov

S13·E481 Core

Ace Rescued! Whitebeard's Final Order!

Dec 26, 2010 · 24 min

Ace is finally free from the execution scaffold! Luffy and his brother make a fearsome team as they blaze a path toward salvation. Ravaged by the war, Whitebeard wistfully commands

S13·E483 Core

Looking for the Answer!

Jan 16, 2011 · 24 min

An eerie silence falls over the battlefield as Luffy and Ace share a heartbreaking final moment together. With his dying breath, Ace begs his brother to convey a message to his fel

S13·E486 Mytharc

The Show Begins! Blackbeard's Plot is Revealed!

Feb 6, 2011 · 24 min

The world reacts to Whitebeard’s death with shock and awe. Meanwhile, Jimbei risks his life to save Luffy and Blackbeard reveals the depraved depths of his nefarious nature!

S13·E487 Core

Akainu's Tenacity! The Fist of Magma Attacks Luffy

Feb 13, 2011 · 24 min

While Blackbeard and his men seek to sink Marineford, Jimbei and Luffy’s desperate attempt to flee is thwarted by Akainu’s fiery fists. The situation appears dire until a former en

S13·E489 Core

Here Comes Shanks! The War of the Best is Finally Over!

Mar 6, 2011 · 24 min

The Heart Pirates head for the bottom of the ocean as Trafalgar Law prepares to operate on Luffy and Jimbei. Meanwhile, the arrival of Shanks brings the bloodshed to a sudden halt!

S13·E494 Core

Here Comes Sabo! The Boy at the Gray Terminal!

Apr 17, 2011 · 24 min

The flashback continues as Ace robs a ruthless gang of pirates, and Luffy is left to take the fall! Will Ace and his friend Sabo let Luffy be tortured to death – or will they risk

S13·E495 Core

I Won't Run! Ace's Desperate Rescue Operation!

Apr 24, 2011 · 24 min

Ace and Sabo race to rescue Luffy from the clutches of a murderous gang of pirates! Sabo wants to grab Luffy and make a break for it, but Ace refuses to back down from a fight – ev

S13·E496 Core

To The Sea Someday! The Pledge of the Three Brats!

May 1, 2011 · 24 min

When a nobleman recognizes Sabo in the streets, Luffy and Ace learn the painful secret of their friend’s past. As a sign of solidarity, the three boys pledge to become pirates, and

S13·E501 Core

The Fire Has Been Set! The Gray Terminal in Crisis!

Jun 5, 2011 · 24 min

While flames spread across Gray Terminal, Sabo makes a desperate attempt to escape the trappings of his noble birth and save his brothers. Meanwhile, Luffy and Ace must fight to av

S13·E502 Core

Where can freedom be found? A Sad Departure of a Boy!

Jun 12, 2011 · 24 min

Luffy is spared from a fiery death by an unlikely rescuer, but Ace refuses to leave Gray Terminal until he settles the score with Bluejam. Meanwhile, Sabo makes waves with a last d

S13·E503 Core

Take Good Care of Him! A Letter from the Brother!

Jun 19, 2011 · 24 min

Luffy and Ace receive troubling reports of a Celestial attack on Sabo’s ship. Ace is eager to seek out the responsible parties and extract revenge, but a letter from his absent bro

S13·E504 Core

To Live Up to the Promise! Departures of Their Own!

Jun 26, 2011 · 24 min

Through all the trials and tribulations of their life in the Goa Kingdom; East Blue, the brother Ace and Luffy are finally set to go out on their own. Have they gained the strength

S13·E505 Core

I Want to See Them! Luffy's Mournful Cry!

Jul 3, 2011 · 24 min

After the War of the Best, Garp finds that he has to answer to Dadan for not having been able to stop Ace’s death, while Luffy, who has lost his will to fight on, is reminded by a

S13·E506 Core

Straw Hats in Shock! The Bad News Has Reached Them!

Jul 10, 2011 · 24 min

Luffy finally realizes that, though he has lost his brother, Ace, he still has a lot to live for! Meanwhile, other members of the Straw Hat crew begin to hear news of the tragic ev

S13·E511 Core

Unexpected Relanding! Luffy, to Marineford!

Aug 21, 2011 · 24 min

Luffy, along with Jimbei and Dark King Rayleigh, causes quite the commotion upon his return to Marineford. Meanwhile, powerful pirates all across the globe wreak havoc on the innoc

S13·E513 Core

Pirates Get on the Move! Astounding New World!

Sep 4, 2011 · 24 min

Trafalgar Law waits for the right moment to make his move, Blackbeard is pursued by powerful marines, and Chopper makes a surprising return to the land of gargantuan birds!

S13·E514 Core

Living through Hell! Sanji's Fight for His Manhood!

Sep 11, 2011 · 24 min

Nami uses her feminine charms to learn about the New World weather, Franky moves into Dr. Vegapunk’s laboratory, and Sanji must fight to stay out of a cute dress!

S13·E518 Core

An Explosive Situation! Luffy vs. Fake Luffy!

Oct 9, 2011 · 24 min

Luffy picks a fight with himself, Chopper falls in with a dubious crowd of imitation pirates, and Zoro causes a commotion when he falls asleep on the wrong ship!

S13·E519 Core

The Navy Has Set Out! The Straw Hats in Danger!

Oct 16, 2011 · 24 min

Chopper struggles to make sense of the changes his “friends” have undergone in the last two years, and the Navy mobilizes in an attempt to stop the pirate posers. Will the real Str

S13·E521 Mytharc

The Battle is on! Show Them What You Got From Training!

Oct 30, 2011 · 24 min

Things get pretty hectic as the Navy finally confronts Fake Luffy's amassed pirate army - and the real Straw Hats prepare to set sail! Things don't go smoothly for either, however,

S13·E522 Mytharc

Everyone Together! Luffy, Setting Out for the New World!

Nov 6, 2011 · 24 min

Luffy and his crew are finally reunited, but before they can set sail, they’ll need help from Dark King Rayleigh, Boa Hancock, and all the friends they’ve made in the last two year

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