Princess Twilight Sparkle is the latest addition to the Equestrian Royalty, and as such she needs a Guard, like Celestia's Daylight Patrol and Luna's Night Troops. Of course, that would usually mean that she'd have to gather them among ponies... but an observation from a visiting friend leads her to change this concept.
Is this a good idea, or she's going towards her usual shenanigans?
This story takes place in the IDW canon. Just thought I'd warn you.