Starswirl the Bearded developed a time-travel spell. A pony could use it - but only once, and only be in the past for about a minute. One chance. One minute. That's all Princess Celestia has to save her sister from the Nightmare.
A few days after the events of 'Crusaders Of The Lost Mark', an apoplectic Spoiled Rich goes to Twilight to shout at her. A lot. This should be interesting... let's eavesdrop, shall we?
What does it mean to be a Changeling? To the former human Prince Phasma, that means doing what you can to survive and thrive in an utterly alien world.
They say parents shouldn't outlive their children. For Granny Smith, it's too late for that. Now she prays she doesn't outlive her grand-daughter, too.
Life is like a tree: growing, stretching many directions. But the trunk remains the solid center it builds from. A branch may reach the sky, but stays anchored to and part of the tree. Twilight Sparkle isn't the only one to grow into a new role.
Embracing the power to share love rather than steal it, the changelings work to reinvent themselves and their kingdom while Thorax seeks to introduce a more peaceful hive to Equestria.
When Pharynx continuously has nightmares about his old outcast issues, he comes to face two options: to open up to his brother about his issues, or to continuously let himself crack under the constant pressure.
Caught out as a traitor to the hive, Thorax tells a desperate lie: he's only been pretending to be the ponies' friend so that he can avenge his queen. Now he has to somehow make that lie seem true, and nothing will go according to plan when he tries.
After the Alicorn Amulet is stolen, Starlight and Rainbow Dash gather some friends to steal it back. There's no one way to plan a heist, but pulling it out of your butt and fumbling your way through the whole thing seems to work.
After being left behind in the badlands after her expedition is attacked by a dangerous monster, Twilight Sparkle must survive a hostile, alien environment. Lucky for her, she has some help from one of the natives: A curious changeling named Thorax.
Under the light of the moon, King Thorax and Prince Pharynx come face to face with the changeling's grim past - a dark crown, and the beast that still wears it.
He had resigned himself to stand before his queen, to learn of his place in the hive's latest invasion, but instead witnesses the fall of the queen's empire. Misplaced and frustrated, Vertex must now turn to his newly-crowned king for answers.
During Equestria's annual royal summit, newly-met Shining Armor and Pharynx discover they have a fair bit in common, including a passion for homeland security, and an extremely dorky little brother/sister.
Princess Cadence and Prince-Captain Shining Armor have given Thorax a journal to document his days in the Crystal Empire so they can help him learn from his experiences. This can only go well.