Twilight receives a letter from Trixie one day, but it raises more questions than it answers.
Twilight discovers a book hidden deep within Canterlot Library that reveals some of Celestia's more Caligula-esque... eccentricities.
Scootaloo has some extraordinarily bad luck, which is unfortunate for her since it means she's going to die... a lot.
When Aryanne, Ponyville's resident Nazi sympathizer/unicorn supremacist (who is an earth pony), takes over as substitute teacher for Cheerilee's class, she discovers the ponies aren't quite as excited about eugenics as she is.
Celestia gives Twilight a simple request: start a controlled forest fire. This quickly spirals out of control until all of Equestria is on fire.
Trixie attempts to overthrow Celestia. Celestia attempts to not die laughing.
Applejack becomes a princess... of eyebrow waggles. It takes less than 24 hours before Ponyville is literally on fire.
Trixie opens up a shop selling magical items, much to the annoyance of Twilight who has the bad luck of being located across the street.
Twilight banishes everypony to the moon.
Twilight Sparkle loves books. Trixie loves Twilight Sparkle. Clearly Trixie only has one option. It's just too bad no one told her that love between a mare and a book is illegal...
Upon discovering an ancient artifact, Rainbow Dash and Twilight unwittingly unleash a curse upon Ponyville that causes everyone to speak in puns. Twilight sees it as divine pun-ishment, and it drives her nuts.
Twilight’s article on the importance of checklists finally gets published in the local newspaper. After telling everyone in town, she quickly discovers that no one cares.
Winona commits ritual suicide... and then attains enlightenment.
In a bid for Twilight's attention, Trixie attempts various stunts to gain entry to the Golden Oaks Library, and Twilight's heart. Luckily, she has some help. But what does Spike know about mares? Apparently a lot...
Rainbow Dash has always wondered what it'd be like to do magic, like a unicorn, but seeing as she's not one, she's never had the chance. Luckily for her, Twilight has the perfect solution. Lucid dreaming.