For years, Twilight felt that something was off within her. With the emptiness more pronounced than ever, she decides to confide in Celestia. What the princess reveals, however, will test their relationship to its limits.
"You know something about radiation, don't you?" It was perhaps the last thing that Celestia was expecting her mentor to ask. The sun didn't prepare her for an expedition to the ocean floor
Finding herself unable to sleep, Princess Celestia occupies her mind by penning a letter to Twilight Sparkle. But for a weary princess, the mind has a tendency to wander...
Celestia and Twilight are in a relationship. Twilight wants to meet Celestia's parents. Celestia, understandably, is terrified. After all, it's always awkward when one's parents aren't exactly ponies at all.
Twilight is unable to control her powers during the entrance exam to the School for Talented Unicorns, and in order to reduce the damage caused by her power surges, Celestia shrinks her down until she would later learn how to control her powers.
Twilight writes to Princess Celestia for an explanation of an insidious issue Shining Armor told her about... but she ends up finding a secret that will change her life forever.