Chrysalis spent years spying on Twilight, trying to figure out what gave her the upper hand to defeating her. Upon discovering her own feelings, she tries to flee Ponyville, only to get captured and forced to agree to work alongside Equestria.
Twilight likes it when things are planned out thoroughly. Of course, her husband who also happens to be the Lord of Chaos makes that difficult. Like becoming pregnant and two months before it is due.
Changelings have been depicted as cruel, heartless, love stealing monsters. Multiple ponies across Equestria would love to watch the race burned from the earth. But nopony ever realizes that changelings too wear masks. And behind them, is tears.
To help her understand the ways of the Earth Ponies better, Luna nominates Applejack to take her in for a year and teach her the ways of a modern, earth pony farmer.
Cadence made a mistake and plans on fixing it. However, fixing this mistake will be difficult since she has to face being dethroned for what she wants.
The world is falling apart as Twilight goes on a power hungry rampage through Equestria. Now, Celestia must defeat her prized pupil, and closest thing she ever had to a daughter.
Trixie's life has been difficult after her last trip to Ponyville. Now she finds herself in the home with the mare who caused these troubles. Soone, their small friendship becomes something more.
Twenty years before the Elements of harmony, before Nightmare Moon's Return, Celestia started a whole new slew of problems and headaches for herself and the ones around her. Thankfully Cadence doesn't mind foalsitting.