Garchomp's Mega Bond!

While still in Lumiose City, Ash & co. decide to visit Professor Sycamore in his lab. They are delighted to see that Sycamore has found a Garchompite, but before they can test it, Team Rocket have stolen the Key Stone, the Garchompite and his Garchomp. They chase after Team Rocket to try to retrieve everything, but Team Rocket try to Mega Evolve Garchomp and attack them. Will they be able to rescue Garchomp?