Eevee first appeared when it was caught by Serena in XY088.
Eevee was shown to be a shy Pokémon which liked to perform on a stage-like rock. It was first spotted by Bonnie, Serena and some of their Pokémon. Eevee soon ran away after noticing their presence. Eevee was next spotted, saving Serena's life by calling out to her to prevent her from walking off a cliff. In return for saving her life, Serena left her Flower crown for Eevee to wear, which was not taken until night.
That same night Eevee was spotted on the stage-like rock again, performing its dance. It was being watched by Serena, Pancham, and Braixen. After a performance by Serena, Eevee revealed itself to the group, only to be caught by Team Rocket. Serena and Ash managed to get Eevee out of the trap Team Rocket placed it in, so Jessie, Meowth, and Wobbuffet tried to run after it but Serena, Pancham, and Braixen blocked the way. Jessie's Gourgiest was told to use Seed Bomb onto Serena and her Pokémon. She was saved by Eevee's Protect. After Team Rocket was sent blasting off again, Eevee gladly joined Serena.