Celestia has always been there for all of Equestria. She rises the sun for Pete's sake, what more could you ask for? Suddenly, Celestia has fallen ill and it soon becomes apparent that she will not make it through this bout of sickness. She decides that she must choose a replacement Alicorn from the six elements of harmony, and she must choose fast. However, Celestia's disease has also affected her mind, as well as her judgement. One wrong decision could lead to the downfall of Equestria. On the other hoof, what pony hasn't wanted to be Princess Celestia when they grow up until they were big fillies? Will the mane six's friendship survive the transformation, or will secrets from the past tear them apart during this time of crisis?