Ghetsis summons and takes control of Reshiram, Anthea and Concordia arrive at White Ruins to help in the battle against Team Plasma, Colress' machine is destroyed, freeing all the Pokemon, Looker arrests Ghetsis, Colress and the other Team Plasma members, putting a stop to them.
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 Pokémon 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.
Despite Colress succeeding in zapping Pikachu with the device, he resists and shocks Reshiram to wake him from the trance. In the end, Pikachu's Thunderbolt destroys the device. N manages to cal Reshiram and hears what he thinks about people and Pokémon living together. Looker's backup arrives and arrests Team Plasma; however, Colress is not that upset, deciding to next create a device that will allow people to communicate with Pokémon better. Team Rocket escapes, keeping a truce with the "twerps" for now. N departs with Concordia and Anthea to see the world and help Pokémon.
The battle against Team Plasma is over as of this episode.
Interesting note: the fight with the villains of this series took place after Ash competed in a Pokémon league.
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