Strumming Heartstrings of the Equestrian Intelligence Services is on a mission. A mission from ... well, actually she just made one up for herself. Sure, she has her actual job of keeping an eye on Celestia's ex-student Sunset Shimmer, but that's not enough to occupy all her time. After all, Sunset seems to have gotten a bit better about not getting herself into too much trouble. Sometimes. Occasionally.

Thus, when Strumming encounters a mad zebra seemingly obsessed with getting revenge against the gryphons who injured him years ago, it seems like it might be an interesting diversion. Little does she know there's more to this case than meets the eye...