Ash and friends decide to cheer on their old pal Squirtle at the Firefighting Squad Show, but the famous Pokémon's managers won't let the group say hi.

When Team Rocket causes Pikachu to get separated from the rest of his group, Ash relies on their strong connection to track down his best friend.

With three Pokémon left on each side during the Alola Pokémon League’s exhibition match, Ash’s Naganadel is up against Professor Kukui’s Lucario. A strategic Dragon Pulse lands another win for Ash—and the first-ever battle victory for Naganadel! Then, it’s Torracat’s rematch with Incineroar. The flames burn hotter than ever, and when the smoke clears, Torracat is on top! Triumphant, it suddenly evolves and becomes an Incineroar itself! But all the excitement leaves it too exhausted to continue. Just as Professor Kukui is about to send out his final Pokémon, Tapu Koko appears—and decides that it wants to battle Ash instead! Just how will Ash approach this history-making matchup?

As the Alola Pokémon League’s exhibition match nears its conclusion, Tapu Koko appears—it wants to team up with Professor Kukui and battle Ash! Our hero responds by sending out Naganadel, and the clash of Island Guardian and Ultra Beast powers is an amazing sight. But Tapu Koko manages to overpower Naganadel, so Ash turns to Pikachu, his last Pokémon standing! Tapu Koko raises the stakes as it and Professor Kukui unleash a legendary Z-Move reserved for Island Guardians, but Ash and Pikachu rise to the challenge with their own Z-Move: 10,000,000 Volt Thunderbolt! Once the dust clears, Tapu Koko falls, and Ash and Pikachu are victorious!

With the Alola Pokémon League behind them, our heroes are deciding how to spend their upcoming vacation! Kiawe is determined to finally have an all-out battle against Ash, while Sophocles is going to take the first steps toward his dream of becoming an astronaut. Lana plans to help her dad with his ocean research, and Mallow wants to create a menu for Pokémon at the Family Restaurant. Meanwhile, Lillie continues her efforts to awaken Magearna…and succeeds! But what about Ash? After receiving some wise advice from Olivia, he decides to explore the world—first stop, Pallet Town!

As their vacation approaches, our heroes’ plans move closer to reality! Kiawe has decided to assist Olivia with her kahuna duties, while Lana, Mallow, and Sophocles continue to work toward their own goals. Now that Magearna is awake, Lillie and her family are setting out to find Mohn, and Ash is embarking on a new adventure of his own—he wants to see new places and meet new Pokémon! The Pokémon School class, Professor Kukui, and Professor Burnet are sad to see him leave Alola, but they wish him all the best for the future. And with Team Rocket also departing Alola, just what might that future hold?

Ash and company encounter a Dweeble who has his shell stolen from him by other Dweeble. They aide him reclaiming his home.

Ash and friends come across a group of kindergarten students who have befriended a Trubbish after rescuing it from a junkyard.

Ash and company meet Bianca, Professor Juniper's helper. She gives Ash a badge case, which is promptly stolen by a Minccino. Now the group tries to catch the Pokémon.

Arriving in Nacrene City, our Heroes discover the Gym has a most unusual location and situation!

The day for Ash's Nacrene City Gym Battle challenge is here, and Lenora isn't about to go easy on our Hero!

After some special training, Ash challenges Lenora to re-match.

Ash's Pokémon egg finally hatches revealing a Scraggy.

Ash and company get lost in Pinwheel Forest and encounter a wild Swaddle and Burgh, the next gym leader Ash wants to challenge.

The adventurers encounter a Pokémon Connoisseur who insists that Ash replace all his Pokémon. They soon discover she has a past with Cilan, and a Pokémon battle ensues.

A previously encountered Sandile wants to battle Ash's Pikachu. But their battle is interrupted by some wild Duckletts.

The adventurers cross a foggy bridge and seemingly into the past where they meet a young girl and her Gotitelle.

The adventurers arrive in Castilla City and find that it's overrun with Venipede.

Ash battles Burgh for his third badge.

The adventurers try to help Bianca capture an Emolga.

Iris attempts a training battle with her newly-acquired Emolga. But Emolga has other ideas.

While taking cover from the rain, the adventurers encounter Team Rocket and some seemingly helpful Litwick.

The adventurers meet Emmy, a trainer who has yet to start her journey. Iris reveals her dream to be a Dragon Master.

During a battle with another trainer, Oshawott loses his scalchop, causing Oshawott to run off to search for it mid-battle.

The adventurers try to help a wild Cottonee who's having during its mating season.