When Ash Ketchum oversleeps on his tenth birthday, he ends up with a stubborn Pikachu instead of the first partner Pokm̌on he wanted! But after a rocky start, Ash and Pikachu become close friends and true partners, and when they catch a rare glimpse of the Legendary Pokm̌on Ho-Oh in flight, they make plans to seek it out together, guided by the Rainbow Wing it leaves behind. Trainers Verity and Sorrel join Ash on his journey.