There is an unknown fact that Luna had been hiding about herself : She has been killing ponies in their sleep. What could the reasons be that drives the Princess of the Moon to do this? What will happen when her dark secret comes to light?
Mourning her fiancee and blaming the death on her own weakness, Fluttershy wishes she was stronger. What happens when her wish is granted? What happens when she finds she can't control her new power?