Miss Cheerilee informs Applejack that she never passed elementary mathematics. Since every pony in Equestria is legally required to understand rudimentary math, Applejack must retake and pass a basic exam in order to avoid going back to school.

Sounds simple enough, right?

Starting at a new school, tracking a serial killer, and hiding her thirst for blood is driving Cheerilee crazy. What's a poor undead schoolteacher to do?

While expecting her first foal, Rarity finds her relationship with Big Mac tested.

Sequel to "The Lucky One," but can be read on its own.