"With the help of another new ally, computer tech Cassius, our friends set off in search of Y's missing mother, Rhyhorn Race Grace. En route, they are attacked by Y's former classmates from the Sky Trainer Training School! And then Y gets separated from the others ..."--Page 4 of cover.

"As the Gym leaders desperately try to prevent Team Flare from firing their ultimate weapon, our friends meet a mysterious stranger who reveals vital information about the weapon's arcane history. Then, when Legendary Pokémon Xerneas awakens, it looks like an epic battle with Legendary Pokémon Yveltal is about to start. So why is Blue searching for a Legendary Pokémon whose name starts with a "Z" ...?'--Page [4] of cover.

"After his plan fails and Korrina's Key Stone is stolen, X retreats from the world again, this time holing up in the hollow of a tree. Can anything--or anybody--coax him out once more? Then, our ragtag band of heroes finally finds Team Flare's secret headquarters. But is it already too late ...?"--Page 4 of cover.

X was a Pokémon trainer child prodigy. But now he's depressed and hides in his room avoiding everyone--including his best friend Y. An attack on their hometown by legendary Pokémon Xerneas and Yveltal, led by Team Flare, forces X outside ... now what? Our friends have formidable foes to fight--Essentia inside her transforming suit and Xerosic with his clever trap. Plus they have to reckon with their enemies' powerful Pokémon--Zygarde and Malamar....