The CMC is bored out of their minds with nothing to do on a lazy summer afternoon, so they decide to drop in on a friend to see if there's anything fun to do there.
After finally returning home from her adventure to Manehattan, with a cutie mark no less, Applejack spends her first morning back with Macintosh, baby Apple Bloom, and Granny Smith as they await the return of Bright Mac and Pear Butter.
When Apple Bloom falls from the CMC treehouse and hits her head, she wakes up to a very strange series of adventures, guided by a mare and a stallion who seem vaguely familiar.
(Prequel to Pegasus Feathers) During the summer, the CMC have grown farther apart. Their interests have changed, and when one filly has kept a huge secret from her friends all summer long, she can only hope they will forgive her.
Furious over the mistreatment she got from Diamond Tiara and Sliver Spoon, Apple Bloom goes home and learns a simple lesson about dealing with her problems.