Meanwhile, a day ago, as the TARDIS was vanishing from Twilight's library.

The Doctor gallops inside and the doors slam shut behind him. The TARDIS shakes, and dematerializes. "Wait... no no!" The Doctor gallops to the console, shouting, "Hold on just a minute! You can't just do that!" He begins frantically pressing buttons in hope of stopping his departure. He quickly realizes that he's too late though.

(This would be when Fluttershy heard the TARDIS in the previous chapter and saw it fly infront of the moon)

"Go... BACK!" The Doctor is practically fighting with the time machine. The TARDIS tumbles around, heading straight toward the Royal Castle. The Doctor quickly presses some buttons, then pulls a lever to activate the command. "Oh good." he grumbles. In response to his command, the TARDIS just barely manages to miss a castle, swerving past it instead. "Phew!" The Doctor wipes sweat from his brow.

Suddenly the console malfunctions, sending sparks flying, The Doctor stumbles back, away from the mayhem.

At the royal castle, a guard races down a hall towards the throne room at full gallop. Sliding around the last corner, he charges through the door and calls out, "Princess Celestia!"

The princess looks up at the guard as he skids to a stop, "Yes? What is it?"

The guard quickly snaps to attention and the sound of his front hooves clomping on the floor echoes across the room. He informs the princess, "There is a vessel of some kind flying straight at the castle! What should we do?"

Princess Celestia immediately rises and approaches the guard, "Do we know if it's dangerous?"

The guard, still rigidly at attention, stares straight ahead as he explains, "No, we do not! It appears to be a blue rectangular box about the shape and height of a phone booth." The guard pauses, worried that he may not have conveyed the full gravity of the situation, he add, "But... It's flying!"

"Flying or not," the princess quickly answers, "it wouldn't be right to just charge out and attack it. First, we need to find out whether or not it's even a threat. For all we know, it could be perfectly harmless."

The guard is wondering if perhaps he should have mentioned that it's flying without the aid of any wings. He's just about to make this point to the princess when a second guard burst into the room through the still open door and announced, "IT'S COMING IN FAST!" then galloped out onto the balcony.

Celestia heads out to the balcony to see for herself what all this commotion is about. The first guard silently follows his princess. She watches it for a few seconds, taking note of it's tumbling and twirling action as it flies, "Perhaps it's broken."

The box continued towards the balcony and a collision did indeed seem imminent. The two guards turned and ran back into the throne room. The princess simply stepped sideways, away from the apparent point of impact. When the blue box seemed to be just a meter or two from impact, it suddenly veered away at a right angle, without ever having changed velocity. "Phew!" Both guards let out a collective sigh of relief. Their relief however, is short lived. In the next moment, they both gasped in horror as they watched their princess lift her wings and jump from the balcony, off to pursue the errant blue box.

Meanwhile, within the blue box, The Doctor is in a frenzy of button pressing, dial spinning, and lever pulling, when a short string of rapid fire Morse code emanates from the console, calling his attention to the monitor on the panel in front of him. "Oh, great! There's another winged unicorn, and this one's chasing me!"

With much effort, Celestia has caught up to the blue box and moves in close to it, "Excuse me!" she shouts over to it, "If you can hear me in there, are you in some kind of trouble?!"

The Doctor opens the TARDIS doors and leans out to answer, "Not necessarily!"

"You almost crashed into my castle! Are you trying to wreck it?"

"Actually madam," The Doctor says, "I'm trying to avoid it!"

Celestia still working hard to fly this fast and stay in close to the blue box. "Do you need some kind of help? Can I do anything helpful?" she offers.

The stallion, with his head still poking out of the blue box answers, "Not su-". The TARDIS suddenly veers away and crashes into a mountain side.

Gasping in surprise, Celestia backstrokes hard with her wings and stops, hovering in midair, "Oh no! Now that can't be good! I do hope he isn't hurt." She sighs and flies down to the spot she saw the blue box crash, hoping to render aid. However, when she lands and looks around, she finds... nothing! Not a trace of the blue box, no wreckage, no debris, no crater. It's just gone.

Astounded, perplexed, and slightly disappointed, Celestia leaves the mountain side and flies back to the castle. On the way, she wonders this conundrum, the wobbly flying, blue box that crashes, but leaves no trace. By the time she's returned to the castle, she's figured out that she's going to need some help with this one. She immediately sits down and writes a letter to her most trusted allies.