Cosmic Flash was born an alicorn 100 years before the return of Princess Luna after her 1000 year banishment to the moon. His existence as an alicorn was kept hidden from everypony, even Princess Celestia, his parents posing him as a unicorn until he could care for himself. His secret is becoming harder to hide with the recent ascension of Twilight Sparkle and the birth of Princess Flurry Heart, Celestia and Luna have caught wind of rumors that there is an unknown alicorn living within Equestria. What will he do?