During their break, the heroes get their lunch eaten by a Gulpin. They soon find out a group of Gulpin is eating away the food supplies in the city. They contact Nurse Joy and Officer Jenny, who receive help from Professor Jacuzzi, who decides to stop the Gulpin. After driving off the Gulpin, the professor uses a machine to launch Gulpin away. However, the machine malfunctions and oversizes Gulpin and Ash's Treecko, who battled the former.

While having sandwiches for lunch, the heroes are visited by a man named Poncho and his Ludicolo. They challenge Ash to a battle, who bets his sandwiches with Poncho, who is to buy cheeseburgers if Poncho loses. Corphish volunteers for the battle, but it seems distracted and eventually loses. This infuriates Corphish even more, who runs off while the heroes try to find out why Corphish is angry.