My Little Pony: Friendship is Magic (2012), Volume 8

Rarity helps Cherilee and her sister mend hurt feelings over a long-simmering grudge. A massive event celebrating Ponyville's founding is nearing but an argument between friends splits the town into two argumentative factions! And, something sinister is happening at Sweet Apple Acres! Bad apples have come alive and are determined to take over all of Ponyville! Collects issues #29–33.