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....

Y and friends are battling Legendary Pokémon Yveltal, as X and Blue are attacked by Legendary Pokémon Mewtwo, while the mysterious test subject trapped inside the Essentia Expansion Suit regains consciousness.

"The thrilling conclusion to the story reuniting Pokémon Trainers Gold, Silver and Crystal-- and Team Rocket too! Crystal and Gold battle the enemy while Silver collects the 16 mysterious plates that Team Rocket wants to get their hands on to set their latest diabolical plan in motion. Then, a mysterious force field envelops our three heroes-- along with Legendary Pokémon Arceus-- and transports them all to-- where?! Which unwanted companions tag...