A fourteen year old boy filled with despair over his life-long bout with illnesses and inability to go outside wishes nothing but for the illness to go away. During the night of his fourteenth birthday he receives a telescope and witnesses a comet passing the Horsehead Nebula. After making a wish to be healthy he falls asleep and dreams of happiness but awakes in a strange place unfamiliar to him as a pony the likes none have seen. The mane six try to help him cope with his new life while Celestia and Luna research a way to send him home. When the time comes will he want to go home?