The Equestrian Industrial Revolution is in full swing. Rainbow Dash returns to a drastically changed Ponyville and to Twilight Sparkle, her last friend in the city. She must rekindle the bonds of love and friendship before the winds of change render the Elements of Harmony irrelevant. Even in a world of steel, fire and glass, loyalty is needed more than ever.

Applejack's got a secret she'd kept hidden for many years. Nopony would ever have guessed what she and Twilight were up to in the library late at night, once Spike had gone to sleep. That is, until a jealous Rainbow Dash decided it was her business to find out just what in the hay was going on.

The business of government never stops, and paperwork never rests, even on Hearthwarming. But this particular Hearthwarming, Cabinet Secretary and tea enthusiast Dotted Line plans to do his level best to see it, at least, take a break. His ponies need to go home to their families, and he, well, he has plans this Hearthwarming.

Fluttershy's always hidden a secret from her friends. It's not a horrible, dark secret. In fact, it's nothing out of the ordinary, at least to everypony else: she's got an older brother.

Her brother, though, has always seems to best her when it comes to, well, everything. Tempers flare when he visits Ponyville, and Fluttershy finds herself wondering if she'll ever manage to be as good as him.

Rainbow Dash seems to be losing her mind, forgetting entire encounters and continually saying things that don't make any sense. Scootaloo gets to see Dash twice as much as she'd ever expected. Twilight Sparkle slips into full on-hermit mode. Applejack just wants answers... and to be with Rainbow Dash.

There's a double rainbow. What does it mean? It's so bright, so vivid....

The adventures of Daring Do become a thrilling reality as Rainbow Dash explores ancient ruins, battles sinister foes, and endures shameless cliches in search of a legendary artifact.

When Pinkie Pie ignores Zecora's warnings about the proper preparation of chuckleberries, she ends up locked in a battle with Sugarcube Corner's kitchen. Not just IN the kitchen. WITH the kitchen. Only Pinkie could be in a situation this ridiculous.

Rainbow Dash taught Scootaloo everything she needed to live her dreams. Scoot is a Wonderbolt now, while Rainbow Dash never even tried out. But when Dash passes away suddenly, Scoot is left with one lesson Rainbow Dash refused to teach her, the lesson that tore apart their friendship.

But maybe there's still time to learn something from her idol, and the way she lived her life.

The Great and Powerful Trixie turns to radical politics.

Princess Celestia tires of constantly being surrounded by decorum, deference, and formality, and decides to take a day off from being Princess. But visiting Ponyville incognito is harder than she expects. Will she be able to fit in and make friends without blowing her cover?