Sunset Shimmer has been acting weird. Not just around a puzzled Twilight Sparkle, but her other friends and complete strangers as well. In all honesty, Twilight believes there's something wrong with Sunset, and Twilight wants to find out what and wants to help.

However, when the purple Princess finds out that she may be the cause of this awkward behavior, she also learns of an embarrassing secret Sunset has been keeping for too long. And this may cause Twilight to think of the orange girl as more than just a best friend.