Simply put: Filthy Rich hears about his wife's outrageous behaviour during the events of Crusaders Of The Lost Mark, and goes to confront her about it. Expect fireworks. And a broken glass or two, if you listen hard enough.
(A semi-sequel to "Princess Meets Princess" and "Sun and Flurries".) Flurry Heart visits Spike after learning that he'll become the next dragon lord. In particular, she hopes to confide in him her own worries about her own responsibilities.
An alternate world where the roles are swapped by a time-altering magic, so Sunset Siren and a human Adagio. Adagio is a hard working girl with good feelings while Sunset was waiting for her moment to attack Equestria but; something inside her change
Meadow Flower attempts to cheer up Spike after she and Cloudchaser witness Rarity reject him. Things pretty much snowball from there when Meadow Flower finds herself interested in the dragon.
Chrysalis is beaten. Her invasion of Canterlot? Failed. Her hive? Scattered to the winds. The future of her people? Bleak, grim, and hopeless. But change is in the air, and something is calling Chrysalis north, to the birthplace of the changelings.
The Great and Powerful Trixie has her eye on a place in Twilight's circle of friends at Celestia's School... and then suddenly discovers it may be her only chance to *stay* at the School...