While heading to Stow-on-Side via train, Ash accidentally bumps into Allister, who loses his train ticket. Ash and Goh try to return Allister's ticket, but the latter flees and enters the ghost train.
Ash and Goh meet up with Allister to ask for his help in getting Ash's Gengar to achieve its Gigantamax form. Allister agrees and takes the boys to the stadium.
When Goh returns from the Unova region with a new Pokémon, a Lilligant, his Heracross immediately becomes attracted to it. This causes Goh's Pinsir to feel dejected.
Ash and Goh arrive in Hoenn and meet up with Sophocles, who is working on a project to bring a space probe, known as Talonflame 2, back to earth. The trio work together to ensure that the space probe has a safe return.
Ash and Goh make a second visit to Slowpoke Island. While there, a group of Galarian Slowpoke, along with a Galarian Slowbro and Slowking also arrive on the island and intend on becoming acquainted with their Kantonian counterparts.
Ash, Goh, and Chloe are invited to be special guests in a Pokémon circus. At the site of the event, the two performers, Harmony, who likes Fire types, intends on evolving her Eevee into a Flareon.
Ash travels to Spikemuth in Galar for his next World Coronation Series match against Marnie. Ash and Goh meet Piers, who redirects Ash to Wyndon instead. Ash arrives just in time, and the battle against him and Marnie gets underway.
Goh's next Project Mew assignment is to have a Raid Battle against the Legendary Pokémon Articuno. Ash and Goh head to the Seafoam Islands to search for Articuno. Goh reunites with his friend, Horace, who is also a Project Mew challenger.
Ash and Goh have arrived in Kalos, where Ash has agreed to reunite with Clemont and Bonnie. On his way to Lumiose City, Ash discovers that his next World Coronation Series battle is set for the next day and will be against Drasna.
The World Coronation Series battle between Ash and Drasna begins with Ash starting off with Sirfetch'd, while Drasna brings out her Noivern. After Sirfetch'd struggles, Ash swaps it for Dracovish.
While spending the day at Cerise Park, Yamper is responsible for resolving any issues amongst the Pokémon residing at the park. Later on, Ash receives a notification for his next World Coronation Series match against Raihan.
Ash, Goh, and Chloe head to the Crown Tundra after hearing reports of a mysterious Pokémon. Lillie, Gladion, and Lusamine also make their way to the Crown Tundra to continue their search for Mohn.
Ash ends up facing Cynthia, using all 6 of his current Pokemon team. Cynthia ends up proving how tough she is and has a strategy to take down one of Ash's best Pokemon.
When Cynthia used an unexpected trump card, Ash is caught off guard by Cynthia's unexpected decision to use Dynamax. Despite having one Pokémon left, Ash is determined to win.
Ash and Leon are down one Pokémon each, with Leon's current Pokémon, Mr. Rime, having set up an icy battlefield infused with Psychic Terrain to give it the advantage.
While Ash is in the lead in terms of remaining Pokémon, his team members are getting exhausted from the fighting they've already done. Meanwhile in Hammerlocke, Professor Magnolia witnesses a shocking turn of events.
While Ash and Leon's battle in the Masters Eight Tournament finals rages on, Goh and the other Project Mew members are heading for Faraway Island to begin their search for Mew.
Following Ash's battle in the finals of the Masters Eight Tournament and his own experience meeting Mew, Goh makes the decision to set out on a new journey.
Ash and Goh are taken on one last trip across the skies with Lugia, reaffirming their decisions to travel the vast world of Pokémon on a never-ending path to learn and meet more of them.
Ash, Pikachu and Misty's journey has led them to Stow-on-Side in Galar, where they reunite with Brock and CIlan, who have been travelling Galar together.
