Loop D'Loop is a changeling who has tried her best to integrate into the small town of Liveryburg. She has friends, a job, and she's happy. Now more changelings are attacking the town, and she's going to have to find a way to save everyone without revealing that she's the same as the monsters they're afraid of.
Loop D'Loop is a pegasus with a secret identity, and she intends to keep it that way. But when changelings attack, she has to find a new mask to wear.
After the events of The Shadow of the Mare, Loop D'Loop takes up the cape and cowl of Mare Do Well again for her own selfish reasons. But her actions have consequences and soon she's in over her head.