BW124: What Lies Beyond Truth and Ideals!

Episode Plot
After continuing their onslaught in the White Ruins, Team Plasma's plan starts to take shape. With Anthea & Concordia returning, being worried about N, they try to stop Team Plasma. However, their Pokemon soon succumb to Team Plasma's control. Soon after, the Light Stone glows and Reshiram is awakened, but before it has a chance to help against Team Plasma, Colress is ordered by Ghetsis to use the manipulation machine on it to gain control. With Reshiram attacking everywhere, things look bleak. Meanwhile, Ash and co. try to escape after being captured, but Colress decides that he needs Pikachu. As he goes to control it with his machine, Meowth appears, with Team Rocket and Looker, and blocks it...

Trivia

 * This is the second time in the Black & White series that Ash and his friends and Team Rocket worked together.