While on vacation in the Alola region, Ash and Pikachu discovers and enrolls in the island Pokemon school.

Ash and Pikachu have decided to enroll in the Pokémon School. One day, their classmates decide to hold a surprise welcome party for them. But in the middle of this excited party, Tapu Koko, the Pokémon known as the island's guardian deity, shows up.

Professor Kukui gives Ash an intelligent Rotom Pokédex that is capable of human speech. Ash goes to find and catch his first Pokémon in Alola, but he instead encounters Team Rocket, who are aided by a wild Mimikyu that despises Pikachu.

Ash is on the verge of catching his first pokemon, as team rocket stoops in to ruin the day

Ash’s class is going on a fishing trip, and Professor Kukui asks Lana to be in charge! Everyone casts their lures, with varying results—Lana befriends one Pokémon after another, but Ash and Mallow can’t get the timing right, Sophocles is too busy collecting data, and Lillie hooks a magnificent Milotic that gets away when she freezes. When they take a break, all their new Pokémon friends get scooped up in a Team Rocket net—and then find themselves falling toward some rocks! But Lana’s Popplio has been working hard for such an occasion, and it creates a giant water balloon to cushion the fall and save the day!

Ash offers a piece of his sandwich to a wild Litten, but it grabs the whole thing and runs off! Ash’s classmates have had similar experiences, but everyone says it’s so cute they can’t get mad. Ash disagrees—he wants to catch Litten and teach it not to steal food!

Principal Oak assigns Ash’s class a special project: taking care of a Pokémon Egg. They soon realize someone will need to take the Egg home after school—and Mallow suggests Lillie! Lillie is stunned for a moment but soon steps up, hoping to get over her fear of touching Pokémon.

Hala asks Ash how to keep Alolan Rattata and Raticate from overrunning the town. With his classmates’ help, Ash suggests recruiting their natural rivals, Yungoos and Gumshoos. Hala agrees, and Ash faces his first trial: battling the enormous Totem Gumshoos and its allies to gain their assistance!

Ash faces off against Kahuna Hala in his first grand trial! His Rowlet defeats Hala’s Crabrawler, but it’s so exhausted afterward that it falls asleep in midair! Hala’s next Pokémon is the powerful Hariyama, who withstands every attack Pikachu tries. Hala unleashes the Fighting-type Z-Move, All-Out Pummeling—but thanks to Quick Attack, Pikachu dodges every hit. Then Ash’s own Z-Move, Breakneck Blitz, overwhelms Hariyama and wins the grand trial!

On their day off from school, Ash joins Kiawe and his Charizard on their route, delivering fresh Moomoo Milk from Kiawe’s family farm on Akala Island. Ash wants to know all about farm life, so Kiawe takes him home to meet the family—and help out with all the chores!

Team Rocket has been living in the lap of lazy luxury thanks to Bewear...but a wake-up call from the Boss gets them back on track, and they head to the beach in search of Pokémon.

Ash and Pikachu decide to join the Pokémon Pancake Race! The prize of a year’s supply of free pancakes catches Team Rocket’s interest, and Meowth builds a robot that looks like Bewear to enter the race. Nina, the defending champion, is competing with her Alolan Raichu, who quickly strikes up a rivalry with Pikachu.

Moments after Lillie’s Pokémon Egg hatches into an Ice-type Alolan Vulpix named Snowy, the Egg that Principal Oak has been caring for hatches into a Fire-type Vulpix from Kanto! The whole class thinks Lillie should be Snowy’s Trainer, and Snowy agrees—but Lillie will have to get over her fear of touching Pokémon.

Ash and Professor Kukui find the wild Rockruff who lives with them limping home, covered in scratches and burns, completely exhausted. The next night, they follow it to Clawmark Hill, where two Lycanroc keep watch over the wild Pokémon who come together to battle and train.

After practicing with Lana, Popplio has learned how to make a balloon that’s big and sturdy enough to carry a Pokémon. In a series of mishaps, Rowlet and Popplio end up together inside the balloon—which gets swept away!

Professor Kukui and Rotom Dex are big fans of the TV show Alolan Detective Laki, and Rotom even has a blond wig so it can pretend to be the star. When Ash’s Electrium Z goes missing, Rotom excitedly takes the case!

Ash and friends are visiting Mallow’s family restaurant to try her legendary Alolan stew! But the key ingredient is missing, and substituting Pikachu’s Thunderbolt for the rare Yellow Nectar doesn’t work out so well.

Ash really wants to have a rematch against Tapu Koko, but he’s not sure about his strategy. Sophocles, who studies Electric-type Pokémon, offers to help! After some research and training at Sophocles Lab, Ash and Pikachu are ready for battle, and so is Tapu Koko.

Ash reluctantly tags along with Lana, Lillie, and Mallow at the mall. One store’s owner points him toward Treasure Island, a gorgeous place full of wild Pokémon, and offers to lend him her kayak. Soon, he and Pikachu are on their way!

After stealing his groceries again, the wild Litten comes to Ash for help when its friend Stoutland starts to have trouble breathing. Ash struggles to get it to the Pokémon Center...but Stoutland is old, and there’s not much Nurse Joy can do.

Ash and Kiawe are training with Litten on the beach as Pikachu and Rockruff play with a mysterious shovel that seems to be moving around on its own—until it rises out of the sand to reveal a dangerous Sandygast! When Rockruff attacks it, the shovel is launched into the sea, and the furious Sandygast evolves into Palossand and traps Ash and Litten inside!

Ash and friends are attending a concert by the wildly popular group Dug-Leo, made up of DJ Leo and his partner, a talented Alolan Dugtrio. Everyone wears blonde wigs in Dugtrio’s honor, including Rotom Dex—until its wig is carried off after the show by another fan of the band, an Alolan Diglett!

It’s Open House day at the Pokémon School, and Ash’s mom has made a surprise visit to see his special presentation! Ash is really nervous about speaking in front of everyone, and Rotom Dex offers to use its new voice-sampling function so it can do the talking instead.

After snooping on Ash’s class as they learn about Z-Crystals, Team Rocket just has to have one! Thanks to James’s research, they spy a Dark-type Z-Crystal embedded in a rock high above—guarded by a towering Totem Pokémon, Alolan Raticate. Team Skull is on the scene, too, and the rivalry begins in earnest!

When Sophocles finds out that his family has to move, he keeps it to himself because he doesn’t want his friends to be sad—but eventually he has to tell them. Kiawe and Lana take Sophocles to their favorite places in Alola, Mallow plans a goodbye dinner, and Ash arrives with a special gift: a Charjabug for Sophocles to catch!

When Lillie’s big brother Gladion arrives on Melemele Island, everyone is excited about the powerful new Trainer in town—particularly Ash, who really wants to battle him! After hearing about Ash’s Z-Ring and his battles against Tapu Koko, Gladion agrees to meet up the next morning.

It’s the season for our heroes’ favorite pastime: Pokémon Base! Professor Kukui has arranged a special lesson for them, complete with a guest coach: Oluolu, the star player of the Magikarp team that just won the Pro League season.

A Pokémon School camping trip kicks off with a scary story from Lana! Everyone thinks it’s just one of her jokes, but the story seems to be coming true when our heroes suddenly fall asleep and then wake up starving! The culprit is a Morelull, who’s been draining their energy with its roots.

Professor Kukui has given the class an intriguing assignment: everyone switches Pokémon partners for the weekend! Each new pairing has a few bumps in the road at first—Snowy refuses to eat under Ash’s care, and Kiawe just doesn’t know how to handle a Water type like Popplio.

Kahuna Olivia is leading the class on a field trip to Akala Island, and everyone is excited! Before they leave, Olivia demonstrates her knack with Pokémon by calming an angry Tauros and bonding with just about everyone, including Ash’s standoffish Litten.

Ash and his classmates go on a treasure hunt riding Stoutland, who can sniff out hidden items! Ash’s Stoutland just keeps digging up colorful shards, and Kiawe has the big find in the first round—a Cranidos fossil!

While their friends visit Kiawe’s farm, Lana and Ash decide to go fishing. At Olivia’s suggestion, they head to Brooklet Hill, where a Totem Pokémon is rumored to live!

Our heroes attend the Wela Fire Festival, where Fire-type Pokémon line up to receive the Wela Crown—said to convey the power of Wela Volcano itself! Just as Ash’s Litten steps up, a feisty Alolan Marowak steals the crown from Kahuna Olivia and runs off. Kiawe pursues it, but Turtonator is no match for Alolan Marowak’s speed!

Ash wants to get right to his grand trial with Kahuna Olivia, but she reminds him that he has to pass the preliminary trials first. Today, though, she has another plan in mind: sending the students out to gather ingredients for the famous Akala Curry!

The day of Ash’s grand trial against Kahuna Olivia is finally here, and it’s a Double Battle! Olivia’s Probopass and Lycanroc face off against Ash’s Rowlet and a strangely aggressive Rockruff.

After attacking Rowlet during Ash’s grand trial, Rockruff is too upset to sleep. It sneaks out of the house and encounters Tapu Lele, who wants to battle! The Island Guardian thinks they’re just having fun, but Rockruff is badly hurt.

When Team Rocket pounces, Ash is excited to show off his new Z-Move, but Lycanroc can’t quite make it work. After Kiawe steps up to send the villains blasting off again, Jessie and Mimikyu land in a shopping mall—and Mimikyu’s disguise is torn!

Mallow is excited when her family restaurant is featured on TV—but it comes with a rush of customers, and her dad is too busy talking to the reporter to help. Eventually, she gets overwhelmed and storms off into the forest, where she falls and hurts her leg!

After having little success using the Z-Move Hydro Vortex, Lana and Popplio meet Ida and her Brionne, who use the Z-Move as part of their show and agree to take Lana on as an apprentice! Lana and Popplio train hard—and when Ida’s sweetheart Kanoa returns with reports of sunken treasure, they join the expedition.