The Eternal Flare of Kalos.

Many years have passed, since the incidents of both Lysandere with Team Flare, and Kani with Team Soul. Kalos has been in a time of surprising peace, and over those years, the gym leaders (and members of the eliete-4) have retired, (most) naming their kids to take over.

Oh, Ash finally managed to grow up. Amazing.

Ash's kids have come to Kalos from Kanto, with no pokemon other than their starters, looking to battle their way through the region. And it seemed like it was going to go smoothly; they had been joined by the two kids of the current champion, and a member of the eliete-4. It was going smoothly, and yet... well, a certain ex-member of the eliete-4, she was plotting.

Why?

Well, she's always been a bit bitchy since the fall of Team Flare. And in her own words... the fire of Team Flare won't go out.... that is the purpose behind the Eternal Flare. She will relight the fire, and it shall burn brighter than ever before. Even if she must destroy half of Kalos.