At a Vermilion City research center studying Eevee, an Eevee tries to imitate different evolved Eevee without success. Seeing Chloe’s Yamper walk by with Ash and Pikachu, it escapes from the center and follows Yamper, with whom it becomes friendly with. When two lab assistants from the center chase after Eevee, Yamper leads it to Chloe’s school, where Chloe spots them and enlists Goh’s help to block the assistants while she escapes with Eevee. Team Rocket, who’s infiltrated the school disguised as students, attempt to steal all of the Pokémon in the school playground, including Goh’s Cinderace and Sobble, and when Ash and Pikachu try to stop them, they fall into Team Rocket’s classic pit trap. Yamper leaps to Eevee’s defence, but when its attack fails, Eevee battles alongside it, imitating and using Yamper’s electric attack, and Pikachu (who’s climbed out of the pit) finishes up with a Thunderbolt. The head of the research facility comes to take Eevee back, but Eevee, who’s become attached to Chloe (who feels the same way), runs back to her. With the head’s approval, Eevee allows Chloe to catch it. (Source: Wikipedia)
