Luna is the personal student of Princess Sunset, alongside her sister, Celestia. When there are reports of sources of knowledge being forcibly taken or stolen, Luna fears an old mare's tale may be true...
Sentenced to death for her crimes against the goddess Celestia, Sunset is given a chance to atone for her crimes by completing nine labors. But the cost might be too much for her to handle.
With the sighting of a new species of owl near Ponyville, the town has caught ornithology fever and the only cure for the madness is Twilight Sparkle. Naturally, she never stood a chance.
The composer of Swan Lake, Sleeping Beauty, and The Nutcracker is dying. Tchaicoltsky is expected to go to his grave alone, until he gets an unexpected visit from a griffon that asks him out for a date.
Cloud Chaser endeavours to (in a smothering way) protect her vain, airy sister after they join the Ponyville weather team. However, as the saying goes: no mare is an island.
Celestia "tough[s] out an obnoxious day on the throne while looking forward to a slice of cake." She's getting too old for this. (And Lyra gets un-backgrounded(!))
Equestria has been granted unlimited electricity thanks to Flim and Flam's changeling batteries. Cadance isn't okay with abusing love to power a modern Equestria. Shining Armor can't let her destroy it all. Only one gets to win.
Tirek has returned, and he wants all of Equestria's magic. Twilight won't let him have that, and she is the final obstacle between him and world domination.
Discord finally escapes his stony prison, but he's got a proposition for Twilight. One that will either see him reformed, or as the ruler of Equestria.