This is about Shining Armor's childhood and adolescence, since he was born to his promotion to captain of the royal guard, running through his relationship with his younger sister, Twilight, and his courtship with Princess Cadance.
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.
If there are three things Principal Celestia can't stand, it's paperwork, princesses and her past. Unfortunately, the first makes up her job... and she desperately needs the second to help her resolve the last.
Celestia encounters problems when Queen Chrysalis tries to take over Canterlot again, and she is forced to use her failsafe on all ponies in the room. Well, two Alicorns, a Draconequus and a changeling.
And they lived happily ever after. Well, sort of. Princess Cadance and Shining Armor are finding that running the Crystal Empire is a far more challenging task then either of them had ever anticipated.
Long after the wedding and the fiasco with the Changelings, Shining Armour and Cadence are finally settled in at home. But one bundle of 'joy' may just end it all.
A Mixed Up AU taking it from the top. A young guard follows his childhood friend on a mission of which the fate of Equestria hangs in the balance... well if you actually believe that old Pony's tale.