When Princess Twilight Sparkle's attempts to research the dimensional mirror hits a road block, she receives unexpected aid from her former rival Trixie, who has returned to Ponyville in the hopes of getting her life back on track. Although their experiment is a success, disaster strikes and the unicorn duo's magic potential is taken from them and spread among the alternate worlds. Together, Twilight and Trixie must now explore the multiverse to restore themselves.
- Compound Title: The first two chapters, Nothing Ventured... ... Something Gained
- "Double, Double" Title: The Mirror, Mirror chapter.
- Magic Mirror: The dimensional mirror that is used to travel between worlds.
- One-Word Title: A few:
- Verbed Title: The chapter titled Scattered