Pokemon the Series Season 17 Episode 29 Mega Revelations!

Ash and his friends continue their journey to the next gym in Lumiose City. On their way, they encounter a young girl named Korrina, who looks like a ninja and challenges Ash to a battle. Ash is excited to take on the challenge and accepts, but soon finds out that Korrina is a Gym Leader and her Lucario is a Mega Evolved Pokémon. Ash has never seen a Mega Evolved Pokémon before, and Korrina offers to teach him about it if he can defeat her.

During the battle, Ash is able to Mega Evolve his Garchomp for the first time, but he still falls short and loses the battle. Korrina explains more about Mega Evolution and tells Ash about a special person named Gurkinn who knows even more about it. She invites Ash and his friends to come with her to Shalour City to meet Gurkinn and learn more about Mega Evolution.

When they arrive in Shalour City, they meet Korrina's grandfather Gurkinn, who is a Mega Evolution Guru. He tells them more about Mega Evolution and how a Trainer needs a strong bond with their Pokémon in order to achieve it. Gurkinn decides to put Ash and his friends to the test and asks them to compete in a series of battles against his students.

During the battles, Ash learns even more about Mega Evolution and is able to Mega Evolve his Pokémon with greater ease. He also learns about a mysterious stone called the Key Stone that is used to Mega Evolve a Pokémon, and is told that he needs to find one if he wants to be able to Mega Evolve his Pokémon whenever he wants.

After the battles, Gurkinn gives Ash and his friends a special mission. He asks them to retrieve a special Key Stone from a nearby cave so that they can Mega Evolve their Pokémon whenever they need to. However, the cave is guarded by a powerful Mega Evolved Pokémon and Ash and his friends will need to work hard together to defeat it.

As they make their way through the cave, Ash, Korrina, Clemont, and Bonnie encounter a mysterious girl who seems to know all about Mega Evolution. She reveals that her name is Diantha, and she is a famous movie star and a powerful Trainer. Diantha also happens to be an expert in Mega Evolution and offers to help Ash and his friends on their mission.

Together, they confront the Mega Evolved Pokémon guarding the Key Stone and a fierce battle ensues. Ash and his friends use the knowledge they gained from Gurkinn and Korrina to overcome the powerful Pokémon and retrieve the Key Stone.

With the Key Stone in hand, Ash is able to Mega Evolve his Pokémon at will and is one step closer to becoming a great Trainer. As they leave Shalour City, Ash and his friends are excited to continue their journey and see where their next adventure will take them.