Satoshi, Goh, and Koharu travel to the Hoenn region, where a Marine Athletics Competition is held in Minamo City. They meet Kairi, who has a Vaporeon, and Koharu`s Eevee thinks of becoming a Vaporeon. The trio takes part in the competition, when Koharu, Eevee, and Goh`s Dewgong become trapped in a cave after they are attacked by a Huntail. They are saved by Kairi and his Vaporeon. Afterwards, Kairi gives Koharu a Water Stone to give to her Eevee. Eevee decides not to evolve.