Chapter 801 is titled "Opening Declaration".
Rob Lucci, who has joined CP-0, is sitting in an alley in Dressrosa next to Spandam. He is talking with someone over a Den Den Mushi about how someone (presumably the Revolutionaries) stole all the weapons from the underground port.
Despite the devastation that occurred in Dressrosa, the country is in harmony and its citizens are working hard to rebuild it. The dwarves have come out of hiding and now live alongside the humans. The reinstated King Riku prepares for the Reverie.
Doflamingo, locked and chained in a Marine ship, is not taking his loss well. Tsuru asks him what he thinks will become of the seas now, and Doflamingo claims that all the big players will clash in a great war. Meanwhile, an onlooking pirate, Jack, is planning on jail-breaking Doflamingo from his Marine escort.
CP-0 has reached the Dressrosa Royal Palace, and an agent reports to their fellow agent Rob Lucci that they could not find the smuggling list but it was clear that things were stolen. Lucci confirms to the agent that it could only be the Revolutionary Army that stole the weapons, and his fellow agent Spandam remarks on how annoying the Revolutionaries were, but Lucci replies that he was just as annoying. Meanwhile, Viola dances before the citizens as the narrator comments that the dark history of Dressrosa has come to an end, and peaceful days are about to return now that Riku is king again. Riku reveals the existences of Gancho and Mansherry to the public, and they are met with cheering as Leo gives blueprints to a human in the hopes of making something. In the palace, Riku notices that the Reverie will happen soon and Tank comments that other countries were already preparing. The harmonious day continues on Dressrosa as Rebecca drops by the market and the citizens build statues of Monkey D. Luffy and Usopp. The time has come for the people to live alongside the dwarves.
On a Marine ship out at sea, Fujitora tells Sengoku that he'll be heading off on his own due to failing to capture Luffy and Law. Sengoku tells him that Sakazuki would probably be lenient if Fujitora apologized, but Fujitora tells him that his pride was too strong. Below deck, Tsuru converses with Donquixote Doflamingo in the brig. Doflamingo tells her that Fujitora should have worked with him to eliminate Luffy and Law because he had everyone under control. Tsuru tells him to stop whining because he lost and that scenario would never happen. Tsuru asks him what will happen to the pirates under his control, and Doflamingo gleefully answers that there were many parties set out to control the world, including the mysterious Family of D., and that Mariejois should be ready to lose their high positioning. Doflamingo says that there could only be one top power on the seas, and the greatest war in history would soon begin.
Meanwhile, a pirate associated with Kaido looks out at the four Marine ships containing Doflamingo. He tells his captain Jack that it would be impossible to rescue him and asks him if they should return. However, Jack brushes the question off and tells him that they would do it regardless because of who he was.
Elsewhere, the Straw Hat Pirates react in shock and outrage when they see the Barto Club's ship, the Going Luffy-senpai. Bartolomeo and Gambia admire Luffy's Vivre Card before the entire crew swoons in Luffy's presence. Luffy remembers how Bellamy and the captains of the Straw Hat Grand Fleet each took a piece of the Vivre Card before departing. Law tells Bartolomeo to set sail for Zou, and Usopp and Franky wonder if Sanji and the others are already there. Suddenly, Zoro notices with a shock while reading the newspaper that their bounties have gone up. Bartolomeo beckons the Straw Hats inside so they could see their wanted posters, telling Law, whose poster he had thrown away, that he was now worth 500,000,000. Bartolomeo then presents the framed posters, each of them with updated pictures. Franky gets angry that Usopp now had a bounty over 100,000,000 and he did not, and the Straw Hats notice that Sanji's poster now has a photo of him instead of a sketch. Bartolomeo reveals that the gladiators who took part in the fight against Doflamingo had their bounties increase by 50,000,000 before pointing out something peculiar on Sanji's poster: he is wanted "Only Alive".
- The revolutionaries are suspected to have taken all the evidence of the smuggling that occurred in Dressrosa.
- Rob Lucci and Spandam have joined CP-0.
- The Dressrosa citizens are building statues of Luffy (as Lucy), Usopp and a second statue of Kyros. Noland was also included behind the three.
- The citizens are now living with the dwarves in coexistence.
- Doflamingo is on a Marine Ships and is being escorted to Impel Down.
- Doflamingo is wearing the standard prisoner's uniform and is once again wearing his signature dark glasses.
- Big Mom's silhouette is shown in more detail.
- Ryokugyu's silhouette is shown.
- The silhouette of an unknown individual is shown with their back turned, featuring long, spiky hair and part of a familiar-shaped crescent mustache visible and overlapping the brim of Law's hat on his silhouette.
- An unknown individual is seen among the silhouettes of the revolutionaries.
- A pirate known as captain Jack plans to attack the Marine ships that are escorting Doflamingo.
- Luffy's group has been brought to the Barto Club's ship, the Going Luffy-senpai.
- Gambia is seen again for the first time since the Corrida Colosseum tournament.
- Bellamy and the representatives of the Straw Hat Grand Fleet each took a piece of Luffy’s vivre card and parted ways.
- Law’s bounty has increased to 500,000,000.
- His bounty increase indicates that he has officially been expelled from the Shichibukai.
- Luffy, Zoro, Usopp, Robin and Franky's signatures are shown.
- The Straw Hat Pirates’ wanted posters are updated with new bounties and images from after the time skip.
- Luffy: 500,000,000
- Luffy's bounty is tied with Law's for highest of the Worst Generation.
- His new bounty image looks almost identical to his previous one.
- Zoro: 320,000,000
- Zoro's bounty is now tied with that of Basil Hawkins.
- Robin: 130,000,000
- Franky: 94,000,000
- Usopp: 200,000,000
- Sanji: 177,000,000
- This time, Sanji's sketch on the poster has been substituted with a photo.
- The poster has "Only Alive" as the stipulation for capture. This is the first (and only) time that this stipulation has appeared on a bounty in the series, making it unique among all bounties in the world.
- Nami: 66,000,000
- Chopper: 100
- Brook: 83,000,000
- His concert poster is used in this poster.
- His epithet is now officially "Soul King" instead of "Humming".
- Luffy: 500,000,000
- Like Robin, Franky, Nami, and Brook, Bartolomeo's crew get their bounties raised by 50 million.
- Bartholomew Kuma's face appeared on the back of a boy's t-shirt.
- This is the final chapter of the Dressrosa Arc and the Dressrosa Saga.