After the battle against Tirek, just when everything was beginning to calm down, disaster strikes again, and it's not from an unholy creature of burden, but a pony. A normal pony layered with an ancient sickness and plagued with nightmares.

Taken into custody by the Canterlot guards and put in confinement where the stallion is constantly monitored and observed, Princess Celestia, Princess Luna, Princess Cadance, and Princess Twilight Sparkle will attempt to help the forlorn stallion no matter the case.

If the four princesses don't work fast, it may lead to his destruction.