Fluttershy had no idea that the stray telephone booth on the edge of ponyville would trouble her in the most catastrophic ways!
It seems that the Dr. Whooves lives in it, and if that's not all, it's a time machine/spacecraft.
He has been stuck in Equestria for quite sometime now, and when he finally is able to escape back to earth, he has company aboard the TARDIS... A pegasus now turned human on earth...
Scared out of her mind and wishing to go home, she has the opportunity to experience life on earth. And maybe even love with a human boy... Who calls himself a brony?!