Eps 28: "Champion Carnet Apears! The Mega Sirknight in the Fog!!"
Summary:

Upon arriving in the next town, Satoshi learns that the Kalos Region
Champion Carnet will be holding an exhibition match, but he misses out
on the sign up deadline. He heads to Professor Platane's lab, being
tasked to help in his research on Mega Evolution, when he meets Carnet
there by chance. She allows him a friendly match, Pikachu against her
Sirknight, and she shows she knows what Mega Evolution is.
Preview:
File Details:
Format: Mp4
Size :75MB
Subtitle: English (Hardsub)