This is one of the Fillers I don't really much like. I liked that Ledian appeared, but just trying to pass through a windy valley seemed like the worst plot in any episodes so far.
I'll admit that although most Bug types are weak, the Ledian in this episode was strong. Had it not been for Team Rocket's balancing act, I would've hated this for sure.
At least Ledian was a hero by saving Togepi and Pikachu, that works in my book. 3/10