Following the events of the film, Argyle Starshine shows up in Maretime Bay, surprsing Sunny and her friends. Izzy grows concerned when she notices something off about the stallion, and changes in Sunny's behaviour...
Equestria is under threat by a terrorist group that seeks to return things to the old days. To the days that the three tribes ruled the country, not the alicorn sisters Celestia and Luna.
Diamond Tiara gets a new playdate, but she's not the kind of filly that Diamond Tiara likes to play with, so she must think of some way to deal with her...
Diamond Tiara and Apple Bloom hate each other. They hate each other so much, and they don't care what their families think. They will go to any lengths to ensure they never be together.