Rainbow dash and Twilight Sparkle are walking-and-talking down the street towards Twilight's house, when all of a sudden the Mysterious Mare Do Well bolts across the sky, Striking confusion upon the two, while Mare is chased by a mysterious figure...

Later on, it is discovered that Mare Do Well has been doing several crimes, and also causing confusion among Rainbow and Twi, due to the fact that they both know that the Mysterious Mare Do Well is just a group of ponies, INCLUDING TWILIGHT, Helping others.