As the journey to Daybreak Town and Dawn’s next Pokémon Contest continues, our Ash and friends are passing through the forest when they are suddenly attacked by a wild Magnezone! They later talk to Officer Jenny, who informs them that the wild Magnezone, as well as a wild Metagross, are attacking a nearby town, and no one seems to know why. Fearing for the town’s survival, Pikachu and Pachirisu start shooting Electric attacks into the sky in an attempt to lure the two wild Pokémon back up to the mountain.
Later on, Ash and friends run into a patrolman named Crispin, who tells the group that the two wild Pokémon always battle in a basin in the mountain. They battle there in order to release the magnetic charges that the mountain produces from time to time, but the basin has mysteriously been flooded. As they figure out how to remedy the situation, Team Rocket decides to get the two wild Pokémon to join them...with the help of some negotiating by Meowth. But their plan fails over and over, and they are sent blasting off again.With the help of Buizel and Happiny, the water in the basin is frozen and then lifted up and into a deep crevasse. The basin is ready for Magnezone and Metagross to battle happily once again!
It's the first Japanese episode from 2010s.
The scene with the ice falling into a canyon with Team Rocket frozen in it is to a scene in the older episode episode, "Bye Bye Butterfree" after Pikachu did an electric attack.