In search of food, the Straw Hats attempt octopus hunting before discovering a barrel in the middle of the ocean. After opening the barrel, with fireworks launched from it, the Thousand Sunny gets thrown into the foggy Florian Triangle where it encounters a ruined ship with a living skeleton on it. While the others are unnerved, Luffy boards the ship with Sanji and Nami where they find the skeleton

Onboard the Thousand Sunny, Brook tells his story of being a musician before being killed. However, his spirit was able to reanimate his skeleton due to the power of the Revive Revive Fruit. He also tells of having his shadow stolen, and thus cannot be out in open sunlight

Brook bids farewell to the Straw Hats and leaps overboard, revealing that the lightness of his body allows him to dash across the ocean's surface. Nami, Usopp, and Chopper sail out to explore the island using the Mini-Merry II, ending up getting knocked onto land before they are chased by a patchwork cerberus that is a third fox. Back on the ship, the remaining crew members are harassed by an invisible creature

Usopp, Nami and Chopper traverse through the forest of Thriller Bark, Chopper revealing Doctor Hogback to be a famous surgeon and expressing excitement to see him. But when the group have second thoughts of heading towards Hogback's manor, due to the strange creatures roaming the wood, Hildon is nowhere to be seen before being attacked by a platoon of zombies that drive them towards the direction of the manor. While immediately hospitable, despite the manners of his female assistant Victoria Cindry, Hogback starts acting strange after it is mentioned that Brook has arrived on the island

After the meeting with Hogback, who frightens Chopper by insisting that no one is allowed in his laboratory, Nami takes a shower with Usopp and Chopper outside while musing her thoughts on their situation. But Nami finds herself restrained by an invisible man in the shower, the figure fleeing when Usopp and Chopper manage to drive him off. The invisible man meets with Hogback and the ghost, referred as Perona, to discuss what to do with the Straw Hats

While evading the Surprise Zombies upon finding a secret passage, Nami, Chopper and Usopp discover the truth about Victoria Cindry being a starlet who died long ago. They eventually found the door to Hogback's laboratory, observing the scientist from outside before they are found by a mysterious samurai zombie who sounds like Brook. Meanwhile, Luffy's group are ambushed by ghosts who briefly made them depressed before they reach the graveyard where they are ambushed by the zombies

After beating the zombies, the Straw Hats learn that one of the Shichibukai, Gecko Moria, has been stealing people's shadows and using them to revive zombies. After they leave, Absalom rallies the zombies together for the Night Attack, while the ghosts from before return to their master, a Gothic Lolita-style Ghost Princess Perona. Gecko Moria himself, a massive, giant-like man, is awoken

Usopp, Nami and Chopper are effortlessly incapacitated by Ryuma and locked inside a coffin. Luffy and the others enter the mansion and defeat the Surprise Zombies with ease, but Sanji goes missing, so they force Oinkchuck to act as their guide by taking him with them. While the zombies of Thriller Bark celebrate the start of the Night Raid, Absalom awakens the other General Zombies to handle the Straw Hats

After awakening the General Zombies, Absalom is accosted by Lola, a zombie warhog obsessed with making him her husband. After learning that he's chosen Nami to be his bride, Lola sets her sights on the navigator. Nami, Usopp, and Chopper manage to escape their coffin and find themselves in a garden, surrounded by animal zombies, including a bizarre penguin-bulldog zombie named Inuppe who talks and acts a lot like Sanji

As Perona makes her way to the Thousand Sunny to get the Straw Hats' treasure while Absalom attempts to stop Lola from hunting Nami, who realizes Innupe's uncanniness to Sanji, Luffy, Robin, and Frankie are lured by Oinkchuck into a room where they are forced to face an army of armored General Zombies. Though they are able to handle them, the three Straw Hats decide that evading them is top priority. But while Frankie and Robin escaped, Luffy's route was blocked by a zombie swordsman named Jigoro who acts much like Zoro

Despite Absalom's attempts to halt Lola and abduct Nami to be her bride, both intents failed as the latter flees from Lola with Usopp and Chopper unable to slow the warthog zombie down. While the Wild Zombies disrespected his orders for them to not harm Nami, Absalom puts the lot in their place while venting his bad mode on Inuppe by blasting him into a wall for his insolence. At the same time, Franky and Robin buy some time against the Taralan and the General Zombies by the former destroying the bridge to trap the zombies in the courtyard while Robin flies them to the area of the castle behind Taralan

When Usopp and Chopper are unable to halt Lola, Nami manages to quell the warthog's bloodlust by claiming to be a male crossdresser while encouraging her to take more violent steps in getting Absalom's affections. But when Absalom manages to evade Lola, Nami, Usopp, and Chopper hide inside Perona's servant Kumacy who is unable to reveal the pirates' location as they overhear Absalom and Perona talking about being summoned by Moria as he obtained an ideal shadow for his ultimate Special Zombie: Luffy. Meanwhile, after their enemy used his webs to reach them, Franky gets the upper hand against Taralan until Robin is immobilized by the Spider Mice, the ones behind the abductions of Sanji and Zoro

After defeating Taralan and releasing his shadow soul from within, Brook explains to Robin and Franky the truth that the zombies of Thriller Bark are actually corpses animated by shadows taken by Gecko Moria from his victims via the power of his Shadow-Shadow Fruit. Meanwhile, Moria meets with the rest of the Mysterious Four (as well as the hidden Straw Hats in Kumacy) where he uses his powers to steal Luffy's shadow to use his Special Zombie

With Luffy's shadow, Moria and his followers head into the freezer holding his ultimate special zombie that he believes will help him gain power in the New World: the massive ancient warrior known as Oars. At the same time Brook parts ways from Franky and Robin after giving further crucial advice regarding the zombies, and answering Franky's request, so he can go forth to accomplish his own goal: defeating the zombie Ryuma and reclaiming his shadow from the samurai fencer

With Usopp, Chopper and Nami bearing witness, Moria implants Luffy's shadow inside the corpse of Oars. Within moments, the massive zombie comes to life with three Straw Hats discovered by Moria's gang. Luckily, Oars immediately displaying aspects of Luffy's personality by yelling out for food, the three Straw Hat pirates escape in midst of the giant's revival

Brook confronts Ryuma, recalling his time on Thriller Bark five years prior - and his first battle with Ryuma and how he lost to a zombie with his own shadow. Ryuma mocks Brook for being so careful about his afro, and the two engage in another battle. Oars meanwhile continues to exhibit Luffy's personality traits as he devours most of Thriller Bark's food while declaring his desire to be King of the Pirates

Usopp, Chopper, Robin and Franky return to the Sunny, discovering their ship had been ransacked before waking up Luffy, Zoro and Sanji. After informing the three about their current status and Nami's abduction, Franky reveals that he asked Brook before they parted way of is what driving him as he could not really return to society due to his appearance. Brook reveals that he and his crew made a promise to return to Reverse Mountain where they left a valuable friend fifty years ago

Luffy, Usopp, Sanji, and Zoro tell the rest of the crew how they got to meet Laboon as they started their new journey, while Brook reflects on his promise to return to Laboon amidst his duel with Ryuma. Luffy declares his intention to make Brook a part of their crew, and the Straw Hats prepare to counterattack the forces of Thriller Bark in order to reclaim what was stolen from them

With their goals in mind, Luffy, Sanji, Robin, Usopp, and Chopper go after Nami and Moria! Meanwhile, Franky and Zoro head toward Brook. However, Hildon tells the others of the Straw Hat's plan

Luffy continues on to take on Moria while Chopper and Robin remain behind to take on Hogback who sics Jigoro and Inuppe on them. After Oars runs off with a new pirate hat from his destruction, his actions disrupting Abalsom as his wedding to Nami is almost complete, the remainder of the crew end up in Perona's room where she uses her negative powers on them. But Usopp reveals that he's immune to her attacks due his negative personality, staying behind to take on the ghost princess while the others continue towards Absalom and Ryuuma

As Usopp continues to stand up to Perona's Negative Hollows while wiping out Wild Zombies, Brook is greatly overpowered by Ryuma was about to defeat the skeleton when Zoro arrives. Meanwhile, Oars continues to cause chaos on Thriller Bark, forcing Absalom to send his entire General Zombie audience to stop him. But Abolsom learns that Oars annihilated all of the General Zombies with a "non-Gum-Gum" Gatling before Sanji arrives, Luffy having found Gecko Moria and expressing his intent to beat him up

As Luffy finds himself facing Gecko Moria's animated shadow Doppelman while attempting to attack Moria, Usopp manages to dispatch the Wild Zombies and chases after a frighten Perona with Kumacy chasing after him. Though Absalom initially believed Sanji to not be a threat as he easily dispatched Inuppe, he is shocked that the pirate able to actual due harm to his heavily modified body. Having placed Nami's unconscious body on a pew, Sanji explains that he has more of a beef with Absalom besides his actions against the women in his crew

Beating Absalom when he refused to reveal he has been using firearms, Sanji reveals that he knows Absalom's invisibility is due to the Clear-Clear Fruit which he wanted for his own reasons. As Sanji defeats Abalsom, Luffy managed to get through Doppleman to land a hit on Gecko Moria with his Gum Gum Stamp. At the same time, losing sight of Perona, Usopp finally manages to give Kumacy the slip before finding a more confident Perona floating in mid air out the window

Usopp is forced to go through a gauntlet of Perona's Horo-Horo powers, including an untouchable body, size manipulation, passing right through him and creating explosive mini-Hollows that slowly rip away at his stamina and body. Temporarily turning into Sniperking to finally dispatch Kumacy, Usopp is forced up against a desperate wall until he finally realizes Perona's sudden change. Usopp uses one of his attacks to destroy a nearby wall, revealing Perona's body lying helplessly in her bedroom

Having deduced that Perona used her Horo-Horo powers to project her spirit, Usopp attempts to fire an attack at it. But the attack appeared to miss with Perona producing a Special Hollow bomb to hold Usopp while she returned to her body. Usopp luckily uses an Impact Dial to absorb the explosive force, using it to take out the Wild Zombie Hippo Gentleman with some injury as consequence

Zoro duels Ryuma in Hogback's lab, while Franky guards over the injured Brook. Neither Zoro, nor Ryuma, can gain any advantage over the other, as they keep matching the other's attack. Their attacks quickly destroy the lab, forcing them to escape the room and continue their fierce duel on the roof

Chopper and Robin are outmatched by Zoro and Sanji's zombies, both of whom have almost completely lost the personalities they acquired from their shadows. Chopper tells Hogback that he had once respected him, but does not anymore after realizing the true nature of Hogbacks experiments. Hogback, however, argues that the zombies are truly alive, and recalls that he had fallen in love with Cindry while she was alive, only to have her reject him in favor of her fiancé

With Oars now a fully obedient zombie, Gecko Moria takes his leave while instructing the giant to hunt down the Straw Hat pirates whose wanted posters are sewn on his arm. Oars attacks Luffy before he escapes to chase after Moria. Hogback without Cindry's conflicted support tries to run away, only to caught by Chopper as Robin helps him set up a suplex before Oars's attack smashed through the ceiling

As Abalsom makes another attempt to finalize his marriage to Nami, the other Straw Hats are fretting over Oars hunting them all down. Oars assumes he is kill the Straw Hats and attacks Sanji upon identifying him from his badly drawn wanted poster. While Oars lacks any Devil Fruit power, he is able to use Luffy's attacks to smack Sanji into a building

Absalom, still battered from his fight with Sanji, attempts to once more seal his marriage to Nami with a kiss before she regains conscious. Lola arrives at that time, telling Nami to leave while pretending to attack her before Abalsom, briefly caught off guard, knocks the zombie out with a furious Nami intent to avenge her friend. Nami manages to win due to a combination of Abalsom's injuries and delusion, checking on Lola who saw through her earlier lie while thanking the girl for her encouragement

After being updated by Lola, Nami decides to find her crew after helping herself to Thriller Bark's treasure. But she finds the treasure room after while finding two of Perona's subordinates. Meahwhile, as Brook heads to the kitchen for some salt, the Straw Hats attempt to find a means to knock Oars down

Taking advantage of several weaknesses, including his stupidity and similarities to Luffy, the Straw Hats continue to wear away at Oars despite his continued persistence. While the others were intending to hold off Oars until Luffy takes out Gecko Moriah, Zoro intends to fight the giant to test his new sword Shuusui. Meanwhile, after Nami gained interrogated intel that Perona is taking the Thousand Sunny, she arrive to confront the girl as the mysterious figure makes his presence known

Moria's shadow escapes, leaving Luffy stranded in the forest, as some strange people reveal that they are looking for him. Zoro begins the fight against Oars, revealing the new 108 Caliber Phoenix with his newly-obtained sword, but Oars manages to avoid his attacks. Kuma informs Moria of the appointment of Blackbeard as Crocodile's replacement, and warns him that the Straw Hat pirates may defeat him, too

With Moriah's guidance, Oars is better able to counter the Straw Hats' strategies and turn their attacks against them. Franky is knocked unconscious after a failed attempt to fire himself at Oars with a giant slingshot known as Kuwagata and shoot him at point-blank range with Weapons Left. Nami arrives and joins the battle, but Oars demonstrates that he can somehow stretch his limbs, which the crew realizes is Moriah's Devil Fruit powers

Moria explains that he enabled Oars to stretch by stretching his shadow, thereby forcing his body to stretch along with it in order to ensure that the body and shadow are the same shape. Usopp fires Brook out of Kuwagata, with Robin making him spin and Nami electrifying him, but he only does minor damage to Oars and is knocked out when Oars retaliates. Robin attempts to use her powers on Moria, but he attacks her with his shadow and then switches places with it, rendering her attack useless

With Zoro risking his own life by distracting Oars before the giant knees him into a wall, Usopp shoots Brook's salt into Oars' mouth with Kuwagata. But Moria's shadow catches the bag and flings it back at Usopp, the bag's contents spilling out before Oars apparently stomped Usopp to death. Oars tries to stomp Nami, only for her to be saved Nightmare Luffy who also saved Usopp at the last second before fighting Oars

Oars recovers from Nightmare Luffy's attack. However, the Strawhats all get back on their feet, from Luffy to Brook, and launch a final devastating attack on Oars, which ends with Luffy smashing a Gigant Bazooka into Oars' face from above, breaking his spine and finally defeating the demon. Moria, however, gets out of Oars' stomach moments later, and prepares himself for his ultimate technique, Shadows Asgard

With Zoro telling the frighten Rolling Pirates that Gecko Moriah's Shadows Asgard is nothing but an act of desperation to stall for sunrise at the cost of his mind, Luffy proceeds to attack him in Second Gear. But Luffy only managed to release some of the shadows with Moriah regaining enough of his mind to overwhelm Luffy. But with the Rolling Pirates calling out to their shadows weakening Moriyah, Luffy acts against his crew's pleas by using both Second and Third Gears at once to defeat Moriag with his attack Gum Gum Giant Jet Shell

Despite nearly being vaporized, Luffy, Zoro, Sanji, Robin, and the Rolling regain their shadows at the last second along with the rest of Moriah's victims. As Hogback informs Absalom of their leader's defeat, the Straw Hats surround the still unconscious Luffy with Usopp worries that Luffy might hurt himself from facing stronger enemies in the future. As the Rolling Pirates offer to lead Nami to Moriah's treasure, she remembers Kuma before seeing him on the collapsed tower

Zoro attacks Kuma, who reveals that he has eaten the Paw Paw fruit, and shows his ability to repel attacks, move considerable distances almost instantly and repel the air to attack his opponents. Zoro is quickly outmatched, and Sanji and Usopp's attempts to help him are rendered futile by Kuma's hard body and ability to block projectiles. Kuma then creates a giant paw print that he compresses, offering all the pirates a chance to survive if they turn over Luffy

While almost everyone on the island is knocked out in the blast, Zoro slashes Kuma with Shishi Sonson, but sees that it is ineffective, as Kuma is a Pacifista, a cyborg whose body is harder than steel. Seeing that he can no longer fight, Zoro offers his life to save Luffy, saying that he cannot hope to become the world's best swordsman if he cannot protect his captain. Sanji attempts to take Zoro's place, but Zoro knocks him out

Hogback and Absalom escape Thriller Bark with the unconscious Moria, revealing that Blackbeard's Warlord status from defeating Ace. The next day, the Straw Hats celebrate their victory over Moria, but do not know why Zoro is so badly wounded. Sanji hears the story from the Risky Brothers, but prevents them from telling anyone else, saying it would trouble Luffy greatly to hear that Zoro suffered for his sake, but Robin eavesdrops on the conversation

Brook recalls his past, when the whale Laboon started following his pirate ship and befriended the crew. When the crew headed toward the Grand Line, they had no choice but to leave Laboon behind because the danger the sea would present to a young whale like him, but Laboon followed them over Reverse Mountain, anyway. Brook and his captain convince Laboon to stay behind, promising that after they traveled through the entire Grand Line and he grew strong enough to follow them, they would come back and bring him on their adventures

Brook recalls the Rumbar Pirates' journey through the Grand Line, where they faced many dangers but still managed to enjoy themselves. The captain contracted an illness and attempted to leave the Grand Line through the Calm Belt with the other infected crew, leaving Brook in charge of the remaining pirates. The journey continued until some powerful enemies defeated the Rumbar Pirates in the Florian Triangle, fatally poisoning them

Brook tells Luffy that he is glad to be alive and asks if he can join the crew, which Luffy approves of. All the Straw Hats are shocked by this, except for Zoro, who is sleeping, and Robin, who knew Luffy would accept him no matter what, but they nevertheless welcome him to the crew. Two days later, Usopp and Franky make a grave for the dead Rumbar Pirates, and Zoro lays the broken Yubashiri at the grave