While traveling through the woods, the group encounters an Eevee that was apparently abandoned by a tree. Noticing the collar, they take it to the address in nearby Stone Town. It turns out that the owner is a little boy named Mikey, who left Eevee in the woods because his brothers are pressuring him into evolving Eevee. Stone Town is at the foot of a mountain where evolution stones are plentiful, and Mikey's brothers are hosting a party where people are encouraged to use stones to evolve their pokemon. The brother even try to get Ash and Brock to evolve Pikachu and Vulpix. The party is also a event to decide weather Mikey will evolve Eevee into Vaporeon, Jolteon, or Flareon. however, Mikey does not want to evolve Eevee and Misty encourages him to tell his brothers. However, Team Rocket interrupts the party and steal all the food, evolution stones, and pokemon! Now it is up to Ash and the others to get all of them back.