Pokémon

Ash, his mother, and Pikachu arrive in the Alola region on vacation to deliver a Pokémon egg to Professor Oak's cousin, Samson Oak. While exploring for new Pokémon, Ash stumbles upon a Pokémon school that Samson runs as its principal. While helping to defend the school from a group of Team Skull grunts, Ash witnesses one of the students, Kiawe, perform a powerful Z-Move with his Pokémon to drive the grunts away. Impressed, Ash decides to enroll in the school to learn more about its native Pokémon. The night before Ash's mother returns home to the Kanto region, the guardian Pokémon, Tapu Koko, appears before Ash and gives him a Z-Ring that enables him to perform his own Z-Moves.

On Ash's first day at Pokémon school, Professor Kukui and the other students host a surprise welcome party for him. Soon after Tapu Koko approaches Ash in order to battle Pikachu. Tapu Koko teaches Ash how to use the Z-Ring. Ash and Pikachu manage to unleash the Z-Move, Gigavolt Havoc, but the Z-Crystal shatters after Pikachu's immense release of power. In order to regain the power of Z-Moves, Ash decides to go through the island trials.

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

After Satoshi fails to capture two wild Pokémon, he encounters a Mokuroh that lives in a Tsutsukera nest. After Satoshi feeds the starving Mokuroh, it returns the favor by helping him fend off Rocket-Dan away from its nest. Afterwards, Satoshi catches Mokuroh as his first Pokémon in Alola.

Satoshi helps Suiren train her Ashimari to blow a water balloon large enough to enable undersea travel for people. During a school fishing trip, the class's Ride Pokémon are stolen by Rocket-Dan. However, Ashimari manages to blow a massive balloon to save all the Ride Pokémon from falling on the rocks.

Satoshi and Māmane are separated from their Pokémon during a visit to the local shopping mall.

Satoshi decides and fails to catch a stray Nyabby that continues to give him trouble.

Ash and his classmates go on a camping trip in the forest. The trip does not start out well when Lana scares them all with a ghost story about a traveler who had all his energy drained from him while he was asleep. However, they have no idea that they are being spied on by a mysterious Pokémon. One by one, the gang except for Lillie is attacked, knocked out, and their energy drained from them. The culprit turns out to be a hungry Morelull. Ash figures out a way that the Morelull can get all the energy it needs from him, and later the gang finds out why the Morelull need so much energy.

As part of a class assignment, each of the students must take care of each other's Pokémon partner for the weekend. Pikachu gets to stay with Lillie at her mansion and Lillie is determined to try and overcome her fear of getting close to Pokémon, so she uses Satoshi's methods to gain Pikachu's trust. At Suiren's home, Bakugames is having trouble with her twin sisters, while Mao also has problems with Togedemaru while she works at her family restaurant. Māmane's experiments with Amamaiko don't work out well, but he finds that Amamaiko can be a great night-time comfort. At his family's dairy farm, Kaki assigns Ashimari to work with his younger sister Hoshi, but finds the water Pokémon to be a great problem-solver with the farm's Kentauros. Shiron keeps giving Satoshi the cold shoulder but finally warms up to him when Satoshi includes Shiron in his Pokémon's training sessions.

Lychee, the Akala Island Kahuna, and her Lugarugan appear at the school just in time to stop a fight between Kaki's Lizardon and a Kentauros. She completely wins over everybody's Pokémon including Nyabby. The class and Professor Kukui will be traveling to Akala Island for a special practical class under Lychee's supervision. On the way, they encounter various types of Sea Pokémon. After Satoshi and Pikachu join Lychee in an underwater swim, they find a Hoeruko trapped in a rock crevice by a vicious Hagigishiri. Now they have to help the Hoeruko and fend off the Hagigishiri at the same time.

As part of Lychee's practical lesson on Akala Island, the gang are sent on treasure hunts across the island mounted on Mooland, each of which reacts differently to its rider: Satoshi's Mooland is extremely friendly and enthusiastic, Suiren's Mooland does not seem to like her, and Lillie has trouble even getting close to her Mooland. In the first round, Satoshi finds three gemstones, Mao finds giant mushrooms, Kaki finds a large fossil, Suiren and Māmane find nothing and Lillie is still trying to approach her Mooland. In the second round, Suiren and Ashimari run into a hostile Pokémon which is fought off by her Mooland, an Alolan Isitsubute Satoshi mistakes for a fossil gets away when he tries to catch it, Mao finds a giant fruit, Kaki finds another fossil, Māmane uses technology to find a piece of meteorite, and Suiren finds a lump of metal that can be made into a Z-ring, making her the winner. At last, Lillie uses her experiences with Shiron and Pikachu to finally get close to her Mooland.

With no class today, Ash and Lana go Pokémon-fishing, but they may end up catching more than they bargained for since the lagoon they're fishing in may contain a water-type Totem Pokémon. If there is, then Lana is determined to battle it. Meanwhile, Kiawe takes the rest of the gang to visit his family's dairy farm, and Team Rocket doesn't seem to be having much luck with their own Pokémon-fishing.

Satoshi and his friends go to the Wela Volcano Festival, where an Alolan Garagara appears and takes the "Wela Crown", which supposedly has the power to make Pokémon stronger. Satoshi and Kaki chase after it, which leads to a fierce battle between Garagara and Kaki's Bakugames in which, even when using a Z-move, Bakugames is defeated. Kaki is devastated and disheartened by the loss, but Satoshi and Bakugames encourage him. The next day, Kaki and Bakugames face Garagara in a rematch, but this time Bakugames wins. Garagara not only returns the crown but also decides to join Kaki as one of his Pokémon. Garagara develops a rivalry with Bakugames in the process.

Lychee and Professor Kukui send the class out to find ingredients for Akalan Curry in groups of two. The team of Satoshi and Mao find their task more challenging than expected, especially in getting past angry Karikiris, an Alolan Parasect and an Alolan Digda. Their search for the final ingredient brings them face-to-face with a Totem Rarantesu. Satoshi and his Pokémon must now battle Rarantesu and its partner Powalen, but there may be more to this than meets the eye.