Summary:
In an alternate universe set in Edo period Japan, there is a Mikoshi (portable shrine) race going on, with the winner getting Beli 1,000,000, and Boss Luffy and his friends recruit Franky to build them a mikoshi. Meanwhile, Thriller LTD enters the race and begins working to sabotage their competitors, including groups based on the Flying Fish Riders and Rolling Pirates. The crew meets up with Brook, who can’t remember anything but his own name, and tries to stop Thriller LTD from interfering. They arrive to find their mikoshi destroyed, and Brook remembers that he was once part of Thriller LTD before he tried to leave and was thrown into the river by Hogback, Perona, and Absalom.
Usopp visits the Pinwheel to tell Onami, Sanji, Luffy, and Chopper about the upcoming Mikoshi (portable shrine) race that takes place every 100 years and has the grand prize of a sacred treasure that supposedly grants any wish and Beli 1,000,000. Usopp also meets with Mae, a new employee hired by Onami.
In order to enter as the Pinwheel Eatery team, Luffy, Usopp Onami, and Chopper visit Franky, the biggest builder in Grand Jipang, and are introduced when Franky’s desiccant watch mechanism accidentally throws his loincloth into Onami’s face. Chopper describes the other participants in the race: Legendary Flying Fish Riders, Rolling Express and Thriller Company. As Chopper says this, the Thriller Company (Hogback, Absalom, Perona, Kumashi, and Cindry) arrive to tell them that there is no point in entering the race. Hogback laughs at the group until he is told that the rest of Thriller Company has already left and he follows them. Franky announces that he will build them a Mikoshi good enough to beat the Thriller Company.
That night, The Legendary Flying Fish Riders are interrupted while practicing by a group of zombies working for the Thriller Company. Perona appears and uses negative hollows to demotivate the team. In his self-loathing, the leader of the Fish Riders, Duval, breaks their Mikoshi. Perona comments that it’s “next down” as Robin watches from a distance.
The next morning, Usopp accidentally fishes Brook out of the river while fishing and takes him to The Pinwheel. Brook explains that he can’t remember anything but his name and finds the flute stored in his skull. Brook spends time with Luffy, Usopp and the other villagers.
The night before the race, Thriller Company eliminated all competing teams except for the Rolling Express and Pinwheel Eatery teams. Mao visits Franky’s workshop while the Thriller company attacks Mikoshi’s Rolling Express and uses Absalom’s powers to make them invisible. Luffy, Usopp, and Brook happen to be nearby and notice what appears to be Mikoshi floating away and the Rolling Express team following him. Brook helps Luffy attack the zombies and helps the Thriller Company, but is unable to prevent the destruction of Mikoshi. Sanji and Onami arrive and realize that the next target will be Franky’s workshop.
They find Mao being attacked by zombies that Luffy dispatches with the Gomu-Gumo No Bazooka. In Franky’s workshop, they find their Mikoshi destroyed and Franky attacked. Brook then remembers who he is: a former member of the Thriller Company who was attacked by his team and abandoned in the river. Brook tells the other about his past and leaves them.