Chapter 1016 is titled "This is O-Tama!!".
Ulti, who has regained consciousness, finds Nami, Usopp, and Tama and captures the latter. Zeus reveals that he has inhabited Nami's Clima-Tact, and she works on using him to attack the Tobiroppo. Usopp forces Ulti to release Tama by throwing a Pop Green, and Nami uses Zeus to finish Ulti off with a powerful thunderbolt. A nearby Bao Huang inadvertently reveals Ulti and Page One's defeats to the rest of the castle before being ensnared by Usopp, which allows Tama to use her Mary mask to broadcast herself to the tamed Gifters. On the Skull Dome roof, meanwhile, Kaidou and Yamato begin their clash.
As the people of Wano celebrate the Fire Festival in the Flower Capital, Toko and Tenguyama Hitetsu attend as Hitetsu teaches her how the festival honors the dead and how they hope the lit bonfire can be seen from the heavens. Toko says that she hopes her father can see it and Hitetsu says that with the sky clear, he is sure he can, probably watching over her and the future of the country as Onigashima continues to fly over to the capital.
In the visitor's reception room, CP-0 continues to observe the battle, noting that despite supposedly losing Luffy, the alliance is still fighting. The boss says that an additional total of 5,000 soldiers have been incapacitated, leaving the Beasts Pirates with 24,000 soldiers and the alliance with 3,000. However, due to the Pleasures and Waiters on the Live Stage having turned on Queen, the Beasts Pirates now have 20,000 and the alliance 7,000. CP-0 are amazed by how the disparity in manpower was shrinking and how the tide of the battle constantly changes with new information.
Elsewhere, Bao Huang learns that Momonosuke has fallen off Onigashima, and, believing it means he is dead, becomes excited by the thought of breaking the alliance's spirits. On the same floor, Usopp is amazed at how the Clima-Tact he created was now talking, even thinking he is more a genius than he gave himself credit for. Zeus, however, explains that it is still him, just inside the Clima-Tact. Nami asks how this is possible when she saw him get eaten and Zeus explains that after his soul left his body and Hera was about to eat him, Nami extended the Clima-Tact and his soul inhabited it. Nami expresses annoyance at having a sentient weapon and Zeus realizes she still hasn't forgiven him but points out that without Big Mom's powers, he can't leave.
The three arrive at the stage but spot Bao Huang and Ulti together, right before Bao Huang can announce Momonosuke's status, Ulti turns her attention to the Straw Hats as she charges for them. She strikes Usopp to the ground and snatches Tama, blaming her for their Gifters turning against them as well as Big Mom, and also blaming her for Page One's defeat. As she starts choking her, Nami swings her Clima-Tact at her, but Zeus elongates it and even adds spikes to it, leaving Nami amazed. Zeus tells her that Ulti's skin is still hard but no doubt Big Mom's attack left her insides all messed up, meaning one thunderbolt should defeat her for good. Nami says she can't use an attack like that or Tama will get hurt, so Usopp fires Midori Boshi: Sargasso to separate the two of them.
Nami takes the opportunity to make a cloud, but Zeus becomes the cloud. He asks Nami for a new name and she calls him "Fluff", but he disregards it and continues to call himself "Zeus", her right-hand man. She tries to strike Ulti with Zeus but she jumps out of the way. However, Zeus redirects himself and strikes Ulti, finally taking her down. A shocked Bao Huang accidentally announces all across the island that Ulti had been defeated just like Page One, which ends up causing the Beasts Pirates to start losing their spirits instead. By the time she realizes her mistake, she gets nabbed by Usopp's Midori Boshi: Devil, leaving her immobile and allowing Tama to broadcast her voice across the island.
Outside the Skull Dome, Kaidou flies back to the roof in his dragon form and tells Yamato that Luffy and Momonosuke are gone, and if they are going to play, they must protect their pieces, and if they seriously thought getting rid of their chains meant they could leave. Yamato confirms this and says that after they drive Kaidou out of Wano, they will join Luffy's crew. Kaidou changes into his hybrid form and tells Yamato that he is settling in Wano because it is special. He tells them that they have no chance of defeating him and they should just accept defeat and become Shogun. Yamato refuses and says that they will hold him off until Luffy returns, calling him the one Oden was waiting for. As the two clash, Kaidou tells Yamato he won't go easy on them.
- Tenguyama Hitetsu and Toko are attending the Fire Festival in the Flower Capital.
- CP-0 reevaluate the power dynamic at Onigashima:
- Zeus survived Hera's attempt to eat him and has now become one with Nami's Clima-Tact.
- Nami, Usopp and Tama reach the Live Stage, where they find Bao Huang.
- Usopp captures Bao Huang and Tama talks to Onigashima.
- Kaidou returns to the roof of the Skull Dome and confronts Yamato in his hybrid form.