The mystery of Mega Evolution begins to unravel, and new Pokémon join X and Y and their friends as they face an intensifying battle! Meanwhile, the headquarters of the Mega Evolution family, the Tower of Mastery, is under attack by a mysterious figure in a mechanical suit! Who is the masked marauder named Essentia?!

Manga. "Original Japanese edition published by Shogakukan."--Colophon. Manga format; reads from back to front, right to left.