Lillie's egg hatches into an Alolan Vulpix, which she had named "Snowy" in the previous episode, and their principal's egg into a normal Vulpix. The fire-type Vulpix starts playing with Pikachu, Togedemaru, Popplio and the others, while Snowy (an ice-type) ignores the others. Finally, it decides to accept Lillie as its trainer and gets caught in Lillie's Pokéball by itself. Lillie decides to spend some time alone with her newfound partner and takes a walk with Snowy. Team Rocket starts following them and soon corners Lillie and Snowy. Though Lillie tries to put up a fight when Snowy uses Powder Snow, Team Rocket dominates her in battle. She and Snowy are saved by Ash and Mallow. Lillie finally learns to touch a Pokémon for the first time, even though this is exclusively for Snowy at this moment.

The episode was rated 7.63 from 43 votes.

What begins as a vacation for our hero on Melemele Island in the Alola region turns into the promise of many, many exciting adventures to come!

The episode was rated 7.66 from 166 votes.

While training on a beach, Lana's Popplio and Ash's Rowlet are caught inside one of Popplio's balloons, which is blown away by a strong wind. Rowlet bursts the balloon open, and they both crash into Team Rocket's secret base. Meowth and Mareanie chase after them, but they are rescued by Litten. While Ash, Lana, and Mallow search for the missing pair, Litten takes them to where it has been staying with the old Stoutland. Stoutland asks Litten to help them find their trainers; however, Team Rocket is also hunting them. Who will find Litten and the lost Pokémon pair first?

The episode was rated 7.67 from 45 votes.

Ash needs to begin training for a possible rematch against Tapu Koko. Sophocles helps out with scientific methods that yields surprising results. Naturally, this arouses Tapu Koko's interest. Tapu Koko challenges Ash and Pikachu with the whole Pokémon school looking on. Are Ash and Pikachu strong enough with the Electrium Z-Crystal power to withstand the Island Guardian's powerful attacks?

The episode was rated 7.74 from 42 votes.

It's a challenging day for Mallow and her family restaurant, and emotions are running high!

The episode was rated 7.75 from 28 votes.

Ash wants a new Z-Crystal, but he must face some formidable tasks first!

The episode was rated 7.75 from 56 votes.

As if Ash's victory at his grand trial wasn't monumental enough, an unexpected transformation makes a memorable field trip even more momentous!

The episode was rated 7.78 from 27 votes.

Ash and Professor Kukui notice that the Rockruff that lives with Professor Kukui is disappearing at night and returning the next morning badly injured. Following it, they find out that Rockruff is participating in a secret Pokémon training ground. Ash decides to help Rockruff train. Rockruff learns to use Rock Throw. After Rockruff defeats a Magmar that previously defeated it, Professor Kukui decides to leave Rockruff in Ash's care and Ash catches Rockruff.

The episode was rated 7.79 from 47 votes.

Ash's first day off from Pokémon School was supposed to be a relaxing break, but things don't go quite as expected!

The episode was rated 7.79 from 53 votes.

A celebratory Pokémon School class trip turns out to be a reunion no one will ever forget!

The episode was rated 7.85 from 39 votes.

Ash's journey in the Alola region is just getting under way, and our hero has a new partner to share it with!

The episode was rated 7.86 from 77 votes.

A feisty Litten is determined to steal food from others, and Ash and Pikachu are determined to find out why!

The episode was rated 7.89 from 65 votes.

Ash is after his first Pokémon in the Alola region, and the adventure that ensues is typical Ash!

The episode was rated 8.01 from 78 votes.

Ash and Pikachu run into Litten again, but this time something's very wrong with its friend the old Stoutland. Ash carries Stoutland to the Pokémon Center, where Ash, Pikachu, and Rotom-Dex learn that Stoutland is dying. Litten and Stoutland escape from the Pokémon Center and return to the riverside, where Stoutland passes away in the night. After realizing what has happened, Litten is heart-broken and refuses to be comforted by anyone. After Litten finally comes to terms with the loss of its friend, Ash asks Litten to join him. Litten decides to test him by battling against Pikachu. When the battle ends in a draw, Litten chooses to become one of Ash's Pokémon. Team Rocket's Meowth, who for reasons of his own has been secretly watching everything, seems pleased by the outcome.

The episode was rated 8.45 from 44 votes.

The Cerulean Gym is the setting for old and new friends, battling old and new skills!

The episode was rated 8.46 from 35 votes.