When the Cutie Mark Crusaders try to earn their cutie marks in fire fighting they are nearly killed when the fire they started quickly grows out of control. They are rescued by a stallion who turns out to be a bat pony. What's strange is the fact that, until Princess Luna's return, bat ponies have been extinct for over nine hundred years and cannot survive in direct sunlight. Twilight seeks Princess Celestias' advice when she senses a powerful magic hidden deep within the bat pony known as Firestorm. Celestias' only advice is to treat him as a friend.

Never one to question her loving teacher, Twilight follows her instruction and welcomes Firestorm as a friend and so do the other elements of harmony. As their time together continues, Firestorm becomes drawn to not only one of Twilights' closest friends, but one of the fillies of the CMC as well. Twilight soon realizes in the midst of their growing friendship with Firestorm, something about him is very off.....