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?

X, Y and company meet Trevor's online friend Professor Sycamore...but X is suspicious of him. Trevor sets out to get his Holo Caster repaired by Lysandre...who turns out to be another suspicious character. And finally, Alexa is excited about her journalism scoop but is unexpectedly betrayed!

Can our friends trust anyone...?