Everypony is making sure things are perfect for an upcoming visit by Princess Celestia to Ponyville, especially Twilight Sparkle, but trouble arises when a swarm of parasprites, adorable insects with ravenous appetites, invades the town.

Rainbow Dash is preparing herself for an upcoming contest, with a day with the famous Wonderbolts as the grand prize, and is sure that an old move she claimed to have pulled off long ago will guarantee her a win. However, she becomes increasingly nervous that she won't succeed.

Every pony with a cutie mark has a different story to tell about how they earned it. Taking a break from searching for their special talents, the Cutie Mark Crusaders decide to ask Rainbow Dash and the others about their marks, eventually discovering a surprising connection.

The peace of Equestria is threatened when Discord, a mischievous spirit of disharmony, escapes from his imprisonment in stone. Twilight and her friends must defeat him using the Elements of Harmony. If only they can find them!

Twilight's friends have been corrupted by Discord, and all of Equestria is about to fall into total chaos. Twilight remembers about the riddle of finding the stolen Elements of Harmony. However, even after obtaining them, can she and her friends defeat their most powerful foe yet with almost all hope lost?

It's Nightmare Night and the macabre celebrations are in full swing when Luna herself shows up in Ponyville, determined to change her frightening public image.

After Spike's birthday gifts activate his greedy dragon instincts, he undergoes an outrageous growth spirt that threatens to destroy all of Ponyville, so he must find a way to stop growing and save the inhabitants of the city.

The Flim Flam brothers challenge the Apples to a Cider Making Contest and the winner of the showdown gets to take Sweet Apple Acres, so with the farm in peril, the Apple ponies must come together and muster all their cider making skills.

When Twilight Sparkle receives a strange and vague warning about impending doom and disaster from her future self, she drives herself nearly mad in an attempt to stall a cataclysmic event, but her uncertainty makes finding answers difficult.

The Cutie Mark Crusaders adopt the name 'Gabby Gums' to become the gossip columnist for their school paper. They seem to have finally found something they're good at! But is it worth the pain they cause to other ponies with their hurtful stories?

Wearing a mysterious amulet, Trixie returns to Ponyville for her "unfinished business" with Twilight Sparkle.

Twilight Sparkle wakes up one day to find that all her friends' cutie marks have been switched! Can she fix something as bad as an altered destiny?

In this special 100th episode, Twilight Sparkle, Fluttershy, Applejack, Rainbow Dash, Pinkie Pie and Rarity battle a monster as the rest of Ponyville rushes to make it to a wedding on time.

After reminiscing about her Canterlot days, Twilight realizes that she left for Ponyville without really saying goodbye to her old friends, and tries to reconnect and re-open friendships lost.

Ponies begin to argue over who wrote the best lesson after Twilight publishes her friendship journal.