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 Pokemon in a jet-assisted hot air balloon, tracking its flight as the Pidgey climbs higher into the stratosphere.

Just as Ash and friends arrive at a new island, they find themselves in the middle of the Corsola frenzy and Misty hopes to catch one of her own.