Ash and friends discover an island on which the Pidgey population-long protected by environmental regulation and free from predators-has grown to unusually stout proportions and virtually abandoned any desire for flight. There Ash and friends find one Pidgey, however, in which the desire to soar through the heavens burns more fiercely than even in Pidgey from beyond this island. Anxious to see this Pidgey achieve its dreams, the young trainers join with the Pidgey's trainer and follow the Pokémon in a jet-assisted hot air balloon, tracking its flight as the Pidgey climbs higher into the stratosphere than any Pokémon in history. (thetvdb.com)