What do you do when you've been turned into a vampire?
For Cheerilee, the answer is "get a second job."

When Twilight receives a letter from Princess Celestia asking her to come to the castle for something very important, Twilight is puzzled. What Princess Celestia and Luna have to tell her will change the Unicorn's life forever.

Many years after sending her beloved protege to Ponyville, unease sits heavily on Princess Celestia's heart as her relationship with Twilight Sparkle seems to have cooled despite all they've accomplished together. On the advice of her sister, Celestia sets out to investigate and resolve the lost connection with her most faithful student. What does it mean to be a Faithful Student...or a Princess of the Sun?

Earned a six-star rating on Equestria Daily and featured on its very own TVTropes page!.

Twilight Sparkle: magician, scholar, bearer of the element Magic, and most of all, friend.
A bat, a book, and a bite can change so much of that, and bring darkness to her heart.
Can you keep your friendships when you might hurt those around you?
If you want to hurt them?
Bloodlust can bring an end.

War comes to Equestria: with despair, with starvation, with suffering and with sacrifice. And the ponies must learn how to keep true to their values while surviving not just the rigors of battle, but the desolation of total war.