After discovering that her brother's bride to be isn't who she says she is, it's up Twilight and her friends to stop the bride's evil plans and save not only Canterlot, but all of Equestria as well.
The ponies head to Canterlot to attend the wedding of Twilight's older brother, Shining Armor. But Twilight soon has her doubts about her brother's future wife when she sees how pushy and mean she is.
Mr. and Mrs. Cake enter their latest creation into a dessert competition in Canterlot and place Pinkie Pie in charge of guarding it. However, regardless of the pink pony's efforts to keep the tasty treat safe, someone still manages to steal a bite or two. Pinkie and Twilight Sparkle begin an investigation to catch the cake-consuming culprit.moreless
The Cutie Mark Crusaders' latest efforts to find their cutie marks leads them to the school paper. As reporters under the pseudonym "Gabby Gums", the three fillies write a gossip column that reveals all of Ponyville's juiciest secrets. However, disrespecting others' privacy comes with a heavy cost: a guilty conscience and the mistrust of all their friends.moreless
Rainbow Dash is looking to break the wing power record for the tornado necessary to funnel water into Cloudsdale to make clouds. However, she needs everypony's help to do it, which is a hard requirement to reach when Fluttershy is so nervous about flying to perform.
After finding out that Cheerilee doesn't have a special someone to spend Hearts and Hooves Day with, the Cutie Mark Crusaders try to hook her up with Big Macintosh, believing that they are perfect for each other. When their plan to get them together fails, they decide to use a love potion on them, which does too good of a job as Cheerilee and Big Macintosh spend every single moment with each other.moreless
Applejack heads off to Canterlot to represent Ponyville in the annual rodeo. A week later, her friends receive a letter from Applejack, saying that she is not coming home. Twilight and the others set off in search of their friend to figure out why she doesn't want to return to Ponyville.moreless
Twilight Sparkle and her friends are invited to play the lead roles in the annual Hearth's Warming Eve pageant being held in Canterlot. The pageant portrays the founding of Equestria through the struggles faced by, and eventual unification of, the pegasi, unicorns and earth ponies.
It's Spike's birthday, and he starts to get really greedy with his presents. This causes him to have a huge growth spurt and he starts rampaging through town getting bigger and more greedy and it's up to Twilight and her friends to try and stop him.
Rarity becomes popular with the social elite during a visit to Canterlot. However, the demands associated with being a prominent aristocrat start testing her loyalty to her friends, especially when they show up from Ponyville to celebrate Twilight's birthday party, set to take place at the same time as a sophisticated garden party.moreless
When Apple Bloom learns about a special plant that Zecora has that can make your deepest desire come true, she uses it on herself to get her cutie mark. But the plant does too good of a job as dozens of cutie marks start to appear on Apple Bloom's body.
Sweetie Belle disowns Rarity as her sister and decides to make Applejack her new sister after seeing how much fun she and Apple Bloom have together. But then Rarity soon realizes how much she misses Sweetie Belle so she tries to think of a way to get her back.
On Nightmare Night, the pony version of Halloween, Princess Luna appears to join in on the celebration, but everyone is scared of her. It is now up to Twilight to teach the princess to be less scary and more friendly.
After discovering that her deadline to send Princess Celestia a new friendship report is almost up, Twilight tries to quickly learn a lesson about friendship before it is too late.
With all her friends turned against each other and Discord spreading chaos all throughout Ponyville, Twilight must find a way to make things right, find the Elements of Harmony and stop Discord once and for all.
Discord, the spirit of chaos, escapes from his stone prison and Twilight and her friends act quickly to find the Elements of Harmony to stop him. The only problem is that Discord has set up a little game for them so they won't be able to find the Elements.