Mother's Day is coming to Ponyville, and everypony is excited to spend time with the most important mare in their life. But not all citizens of Ponyville share this happiness.
Rarity is the loveliest, prettiest pony in all of Ponyville. The whole town can vouch for that. And Pinkie has always thought her friend to be pretty, very much so! So... What is this ugly, ugly feeling in Pinkie's chest whenever she looks at her?
