Inside the underground mines, Luffy and Bartolomeo are attacked by the Rail Car Man Avelon. Desire is attacked as well, which shocks her, as Bill had rescued her crew after it was destroyed. The three are then sent plummeting further underground, where they discover members of the Silver Pirate Alliance who are enslaved as miners due to not pleasing Bill. Bartolomeo manages to free his hands, and Avelon returns, unwittingly freeing Luffy from his silver ball with an attack. Luffy and Bartolomeo then work together to defeat Avelon, and upon hearing about this, Bill orders the underground mine to be buried.

Luffy, Desire, and Bartolomeo go up against Bill! But the mad, Smelt-Smelt man becomes deranged and lets his true power unfurl! Do Luffy and the others have any hope of exposing Bill's self-serving aims and turning his gang against him?

Bartolomeo recounts the formation of the Straw Hats, sharing their moving story with the rest of his crew! Meanwhile, the mysterious island of Zou approaches in the distance, obscured by fog. But when the haze clears, no one is expecting what they see!

Luffy and the others arrive at the mysterious land of Zou, and find the Sunny. But when they board, they find the other Straw Hats have already disembarked. Thus, Luffy, Zoro, Robin and the others take on the challenge of climbing the monstrous elephant!

Finally scaling the elephant's back, the Straw Hats continue their search for the other half of their crew! But the mysterious "island" on the back of the elephant may hold more danger than they bargained for, as they learn they are not alone!

Luffy pushes deeper into the mysterious forest on the elephant’s back, but he's treading in territory where is not welcome! Meanwhile, Usopp and the others make a startling discovery in a ruined city!

Luffy and the others survive the Rain-Ruption and learn of its vital role in maintaining life on Zou. They continue on towards the fortress learning more about the mysterious Mink Tribe, and are finally reunited with the others - but is that the whole story?

Luffy and the others are unexpectedly welcomed at the fortress and treated well by the Minks, although they have to navigate some cultural differences… And Nami starts sharing what happened to them after they left Dressrosa.

Luffy and the others learn about the dangerous intruders who have come to Zou, and why the island is wrecked! Afterwards, Luffy's loose lips get them into trouble!

Duke Dogstorm - the Straw Hats finally meet the ruler of this strange land, and learn more about the battle that took place here; and the mysterious system by which the island is ruled!

Day turns to night as the Minks keep up their onslaught against the invading Beast Pirates! But Jack's amazing Devil Fruit power may end the elephant island once and for all!

Night and day, Jack faces the fury of the two sworn defenders of Zou, but while they put up a good fight, the Minks aren't able to subdue Jack, especially after he brings out his secret weapon…

In the aftermath of Jack's deadly attack on the island of Zou, Chopper and Sanji rush in to save the fallen Mink Tribe - but they will need the help of Caesar to overcome the poisonous effects of the gas!

More of the dramatic happenings on Zou are revealed as we learn that Jack's pirate band were not the only visitors to the elephant island! And what about the mysterious fate of Sanji?

The mystery of Sanji's disappearance deepens as Luffy learns that Big Mom's lackeys have caught up with him and the rest - and carry with them an invitation from Big Mom that simply can't be refused!

Sanji's dire situation has become clear, but instead of rallying against Big Mom's crew, he submits to go along with them to bring an end to this situation. But being separated from one of his crew is more than Luffy is willing to tolerate!

There's only one key to finding out what happened to Sanji - and Luffy and the others make their way towards finding out more about their friend's disappearance, but on their way the indigenous fauna give them trouble!

Luffy hatches a plan to help Sanji, but he'll have to go alone to avoid an all-out war with Big Mom. Meanwhile, Kin'emon and Kanjuro finally arrive at Zou, unwittingly setting the stage for the Minks' thirst for revenge!

The samurai have landed! And they make their way into the country of Zou unaware of the welcome they will receive by the Minks! The Straw Hats try their best to stop the fight - but as day meets night and Cat Viper and Dogstorm face each other, tensions run high in the elephant country!

Revelations abound as the true nature of the Wano clan and their relationship with the Minks is revealed! Momonosuke's role is greater than any had imagined! But even more shocking - the visage of Raizo the Ninja!

The mysteries of ninjutsu enthrall the Straw Hats as Raizo, the implausible ninja, makes his true powers known! Meanwhile, a mysterious artifact points the way towards the end of the Grand Line!

The mystery of the Ponegliffs is revealed - their true significance, and the story of their creation, leads closer to the Straw Hats than they might have imagined!

More mysteries of the Kozuki Clan are revealed - and the samurai propose an alliance to help topple Kaido! But Luffy's response will shock the crew... and force the young daimyo to take responsibility!

Dogstorm and Cat Viper share their story of being on the journey with Oden and Roger but are interrupted by Nami who is concerned about the sea route. Meanwhile, Jack is plotting to bring down the Mokomo Dukedom again!

The plans are set! The Straw Hats divide and conquer, one group heading to save Sanji, the others to the Land of Wano! But in the final moments before their departure, the tremendous elephant island begins to quake!