As a budding diplomat, Flurry Heart often travels out of Equestria and into other dimensions. It's not uncommon for her to get stalled in the Between Place, but something is different this time. Someone else is here.
Princess Flurry Heart has found something at school that she wants more than anything else in the world. Something she will do anything to get. Something that an unsuspecting young colt has. An extra cookie.
An older, mellower Scootaloo relocates to the Crystal Empire, tasked with tutoring a jumpy junior Princess. She's either the worst pony for the job or the ONLY pony for the job. There is no in-between.
Learning how to control your magic can be difficult for anyone. Especially for Flurry Heart, around whom things tend to explode. Just as well she's got a Spirit of Chaos to help her out.
After rescuing Princess Flurry Heart from a frigid limbo with the help of the Crystal Heart, Sunny wonders where to go from here with the first alicorn Equestria has seen in centuries.
Flurry Heart has requested a very unusual bedtime story. Shining Armor senses something is up, but he also knows that children occasionally come across feelings they don't have words for yet. Books can supply those words.
When a daddy Unicorn and a mommy Alicorn get together and love each other very much, they get a rambunctious little Flurry Heart. When a daddy Siren and a mommy Windigo get together and love each other very much they get...a very lonely creature.
While Flurry Heart and her friends are vacationing in Southern Equestria, they meet Somnambula who is studying clues leading to a mysterious temple where she finds an old friend.