A posthumous letter referring to buried treasure convinces Gary that his grandfather did not die a natural death and, with his friend Brian, he sets out to find both the treasure and his grandfather's killer.
"The Straw Hats' flag floats on the water... Have they fallen at last to the relentless assault of Big Mom's deadly pirates? Or can they escape and finally make their way to the mysterious country of Wano? Meanwhile, the world's leaders assemble for the Reverie. What is the world government plotting?"--Back cover.
"The Straw Hats are just starting to get their bearings in the mysterious samurai kingdom of Wano when Kaido makes his grand appearance as a flying dragon! Kaido is known as the strongest creature alive, so the smart move would be not to antagonize him. But since when does Luffy do the smart thing?!"--Back cover.
"Luffy has just landed in Wano and he's already lost his crew! After a chance meeting with a young girl, he begins to learn more about this strange new land. But mysteries still remain. Where are his scattered teammates?! And what's the shocking truth hiding within this country of samurai?!"--Back cover.
Buggy the Clown, Mr. 2 Bon Clay, and Mr. 3 become Luffy's allies while Warden Magellan uses his Venom-Venom powers to try to stop Luffy from breaking his brother out of Impel Down.
Having injured Whitebeard, the Navy launches an attack intended to quash the pirate rebellion once and for all. Meanwhile, Luffy needs one more trick to get past the three Navy Admirals who are keeping him from rescuing his brother from execution.
The Straw Hats come into contact withWarlord of the Sea Bartholomew Kuma's bare paw and it transports Luffy to an unknown island where he encounters Amazons and scatters his crew all over the world.