Ash arrives in the Kalos region but Team Rocket have followed him once again.
Ash puts everything on the line after helping out some Pokémon.
Travelling through Kalos with Bonnie and Clement, the group comes across a Fletchling who steal their food.
Clemont tries to capture the Dedenne that keeps stealing their food.
Arriving in Santalune gym, Ash challenges Viola to a battle as Serena arrives.
With help from Alexa, Ash trains for his rematch against Viola.
As Serena joins the group, they come across a Rhyhorn race and Ash decides to take part.
Ash, Serena, Bonnie and Clement encounter Jessie who is trying to be a groomer with a Furfrou.
Arriving in Lumiose City, the gang encounters Clemont and Bonnie's father who tells them something surprising about Clemont.
Before heading to Cyllage City, the group decides to stop by the Sycamore Pokémon Lab. Team Rocket decides to kidnap Professor Sycamore, as well as Serena and Bonnie, to pry the professor's mind for the secrets behind Mega Evolution, while Ash and Clemont have to deal with a gluttonous little Chespin with a penchant for macarons.
An attack by Team Rocket seperates the group and there Pokémon in a forest.
Scatterbug are being stolen by a smuggler so they evolve into Vivillon.
The group are asked to help out at a kindergarten when Team Rocket pays a visit.
When Ash and his friends are caught in a rain storm, they find a nearby abandoned mansion to take refuge, but unbeknownst to them Team Rocket has as well. And both groups are frightened by strange occurrences through the house, all centered on a mysterious shadow.
With Chespin gaining weight, Clemont comes up with a way to lose it.
Bonnie's bag with Dedenne in is accidentally switched with a girl's bag with Pichu in.
Coming across a ninja with a Frogadier, Ash and Froakie learn some new techniques for battle.
A Snorlax has fallen asleep and the group needs a PokéFlute to wake it up.
A woman and Malamar have hypnotised Team Rocket minus Meowth and have evil plans.
Ash learns about the Chateau where battles take place and is keen to take part.
Serena likes the idea of PokéVision and decides to make a video of her and Fennekin.
Rumours of a golden Magikarp are heard as a fisherman tries to catch it.
Alexa is doing a report on Amaura and Aurorus when Team Rocket strikes.
Ash challenges Grant and his rock types using Pikachu, Fletching and Froakie.
Using her Fennekin, Serena takes part in a Poké Puff Contest but there is strong competition.
Bonnie comes across a Flabébé and wants Clemont to catch it but it has been seperated from its trainer.
Upon arriving in the next town, Ash learns that the Kalos Region Champion Diantha will be holding an exhibition match, but he misses out on the sign up deadline. He heads to Professor Sycamore's lab, being tasked to help in his research on Mega Evolution, when he meets Diantha there by chance. She allows him a friendly match, Pikachu against her Gardevoir, and she shows she knows what Mega Evolution is.
Ash, Serena, and Bonnie must find out who has been impersonating them in the town they have just arrived in.
A chance meeting with Korrina and her partner Lucario offers surprises.
Ash, Serena, Clemont, and Bonnie help Korrina and her Lucario find the Mega Stone Lucarionite in Geosenge Town's caves, only to come face to face with a Blaziken protecting the caves.
Korrina mega evolves her Lucario but during a battle, Mega Lucario loses control.
Korrina's attempts to help Lucario control itself when mega evolved continue.
Korrina is close to reaching her goal of Mega Evolving her Lucario and keeping control.
Continuing on their journey to Shalour City, Ash and his friends come across the Wrestling Pokémon Hawlucha who is protecting a group of Pokémon in the forest from stronger Pokémon like Machamp, Conkeldurr and a Ursaring.
Ash witnesses a sky battle and wants to enter with Hawlucha and Fletchling.
In Reflection Cave, Ash enters a portal which lands him in a mirror world.
Froakie and Hawlucha struggle to get along as Ash tries to help.
The gang enroll themselves at Professor Sycamore's Summer academy and meet Shauna, Tierno, and Trevor.
The Summer Academy continues where Serena finds an interest in making movies.
The group with Shauna, Tierno, and Trevor go into the forest where they find a mysterious Pokémon.
After all of the activities at the Pokémon Summer Camp, Ash's team and Tierno's team have the same amount of points. To settle the tie, all six will participate in a tag team match. But first, they have to save Tierno, Shauna, and Trevor's Pokémon from Team Rocket.
Arriving in Shalour City, the gang learn a bit more about Mega Evolution.
Ash challenges Korrina to a gym battle using Pikachu, Fletchinder and Hawlucha against her fighitng types.
Bonnie and Clemont are agruing when they come across two siblings in a case of sibling rivarly.
The gang come across a PokéCenter with an inexperienced Wigglytuff who makes mistakes.
Serena is training for PokéVision when she comes across a Pancham who disrupts the performance.
Clemont visits an old school of his and remembers and old friend Shinx.
Bonnie comes across a group of kids helping an injured Lapras and decides to help.