Sometimes, you can't escape your past. Sometimes, you past can't escape you. But when a pony you barely know tries to help, do you let her? Or do you keep her from your past?
What happens when the Reds and Blues finally get Church out of the Epsilon unit? Caboose decides he wants a turn in the unit, of course! What happens next? Well let's just say he always did say he wanted a pony, now he has a world full of them.
Twilight has her parents, Shining Armor, and Cadence, Applejack has Big Mac, Apple Bloom, and Granny Smith, Rarity has her parents and Sweetie Belle, Pinkie Pie has her parents and sisters, and Rainbow Dash has her dad. What about Fluttershy?