In Anistar City, where Serena is rehearsing for the next Pokémon Showcase, our heroes get a nice surprise when their friends Tierno and Shauna arrive with newly evolved Pokémon! Serena’s new friend Eevee is skittish and shy in the presence of so many others, and she suggests a Tag Battle so Eevee can gain some experience and confidence.
The matchup features Ash and Tierno versus Serena and Shauna! When Tierno and his Blastoise go into their usual battle dance, Eevee starts toe-tapping right along with them, and soon it’s leaping and whirling faster than Blastoise can follow! It gets one good hit in with Swift as Serena watches, starry-eyed...and then she asks everyone to put the battle on hold so her team can rehearse a new performance idea!
Ash and Tierno happily continue the battle on their own as Serena and Shauna go off to practice—because the next morning, it’s time to register for the Showcase!