Ash finally begins training for his rematch. Meanwhile, Nurse Joy comes down with the flu. In the woods, Team Rocket finally makes it back to Fennel Valley after being attacked by Harley's Cacturne. While trying to chose a path at a fork in the road, they cause a Gloom to use Stun Spore on an Electrode which rolls down the hill and explodes in front of the bus carrying Pokemon. With Nurse Joy sick, Brock and Professor Oak must take care of all these Pokemon while Ash helps Matt get his Bagon back after it runs off. Team Rocket, in the meantime, decides to steal all the Pokemon.