Part 1: The girls failed to stay awake in an all-night study session for their upcoming test on the water cycle and are left unprepared for it, but Rainbow Dash comes up with the idea to fake a snow day to trick Principal Celestia into cancelling school so they won't have to take the test. They work together using their talents and magic powers to create the illusion of a blizzard outside the window of Celestia's office, and while it does manage to initially fool Celestia and Luna, Cranky Doodle sees through the deception. Later, the girls are forced to take their test while serving detention, but manage to do remarkably well on it due to the subject being closely related to their efforts to fake a snow day, which Rainbow Dash claims was her real plan all along.
Part 2: Sunset joins Pinkie on her holiday tradition of baking a soufflé and giving it to Rarity, but the very short period of time that it remains fresh has resulted in previous efforts ending in failure, and Pinkie is determined to finally succeed. However, Pinkie and Sunset find the path to Rarity's house happens to be right in the middle of a massive two-sided snowball war involving almost everyone in the neighborhood, and everyone refuses to believe Sunset and Pinkie are not involved. Sunset provides cover and allows Pinkie to slip through the battlefield, and just when Pinkie believes she has run out of time, Rarity happens to walk by and is able to enjoy the soufflé while it's still fresh. Rainbow Dash attempts to ruin the moment, but Rarity just blocks the snowballs with her magic shield.
Part 3: Twilight joins the Apple family for their holiday party, which Applejack reveals has always been somehow ruined every time Flim and Flam show up, so Twilight comes up with an elaborate plan to counter their attempt at another scheme. Flim and Flam soon arrive and offer to purchase the cider intended for the party in exchange for a (fake) diamond, so Twilight and Applejack play along by giving them a jug secretly filled with water mixed with salt and pepper. The actual jug of cider is locked in a chest, but the Apple family is shocked to see it gone with a hole in the bottom of the chest, but Twilight reveals she knew Flim and Flam would go after the real cider and dug that tunnel to lure them into a trap. However, Flim and Flam bypass the trap and further taunt the Apple family by giving them back the jug of pepper water before leaving, but then Twilight reveals she had switched the labels on the jugs, meaning the Apple family gets to celebrate with the real cider after all.
Part 4: The girls plan to give away toys to little kids at the mall, but the toys are stored in Sunset's storage locker, and Sunset suddenly realizes she left the key in her locker at school, which is currently closed. Unable to simply walk inside, Sunset comes up with a heist-like plan to sneak inside the building to retrieve the key, but Twilight points out all the issues with it. Pinkie comes up with her own idea of a heist-like plan to sneak into the building, but Twilight also points out all the flaws with it. Applejack wants to use her magical powers, but Twilight quickly dismisses that idea. At the urging of her friends, Twilight comes up with her own plan, and it involves simply calling Principal Celestia to unlock the doors so they can retrieve Sunset's key. After giving away those toys to the kids, the girls decide to go shopping, but Twilight has their gift cards and she suddenly realizes she left them in her locker at the school.
Part 5: The girls meet up at the mall for their gift exchange, but Rainbow Dash completely forgot about it and is now forced to rush around the mall in search of a gift for Fluttershy. With so many long lines everywhere, Rainbow's only option is to accept help from Zephyr Breeze, who happens to work at one of the shops. Zephyr tries to impress Rainbow with gift ideas, but Rainbow keeps rejecting them as she knows Fluttershy would never want such things. Eventually, Zephyr finally takes Rainbow's request seriously and offers a camera to replace one that broke the previous year, which Rainbow gratefully purchases and rushes back to her friends. The girls are finally able to exchange their gifts, and although it turns out Fluttershy already has an identical camera gifted to her by Zephyr Breeze, she's actually happy to now have two of them.
Part 6: At school, Applejack invites her friends to start a new holiday tradition by offering for them to pose for a holiday greeting card like she does with her family. The theme she has in mind for this year is a "cornucopia", and while some of them are unsure about it, Rarity agrees to make outfits for all seven of them for the picture. While Applejack gets the photo shoot prepared in the auditorium, Rarity quickly makes various fruit and vegetable costumes that make them all look ridiculous. After enduring lots of humiliation from their classmates in the hallway, they reach the auditorium, but it turns out Applejack never had any intention of making them dress up. However, not wanting their embarrassment to be all for nothing, they convince Applejack to join them in their ridiculous costumes for the picture.
After so many shorts that had an average length of only two minutes, it was nice to finally see some shorts that lasted seven minutes, which helps to give the story more time to play out at a reasonable pace, though it also means that various running gags end up going much longer than they probably should (though that may depend on your preferences). Personally, I loved parts 2, 4, and 5, while I found parts 1, 3, and 6 to be just fine (and since I suspect these shorts will eventually be released on the official YouTube channel at some point, I'll give my thoughts on each of them separately when they do come up). Overall, this was a very nice format to see, and on its own is another good addition to the series (but this unfortunately means no proper series finale like FiM got, although that final shot at the end of the last part could be considered at least a decent final moment for the series).