Following the completion of the Pokemon League, Ash is back home in Pallet Town. Professor Oak and Delia throw him a party which of course Team Rocket crashes, but Ash is able to send them off with the help of Charizard, who proceeds to wreck the party. Later that day Professor Oak asks Ash to run a errand for him. He wants Ash to go to the Orange Islands and pick up the GS Ball from Professor Ivy. He agrees and leaves soon after. Along the way they become trapped ina forest where the same flock of Spearow from the beginning of Ash's journey is still causing trouble, along with their newly evolved Fearow leader. Now they must figure out a way to get out of the forest before the Spearow manage to get to them.

Walking along the beaches of Valencia Island, Ash and friends are searching for Professor Ivy, who luckily ends up appearing on her own. After finding out why they are there, she takes them to the lab where she shows them the GS Ball and explains why it is so mysterious. Ash then calls Professor Oak about it and Oak is excited to look at it, and then he and Ivy get into a discussion about their various works. Following that, Brock helps clean their living quarters and even makes dinner. That night a little scare happens when Professor Ivy jumps into a cloud of Vileplume's Stun Spore to save a Raticate, and she is taken to the Pokemon Center.After spending the night on the island and seeing how Ivy ans her assistants live and work, Brock decide to make a bold decision as Ash and Misty are ready to leave.