Pinkie Pie is hated by her fillyhood friends, but she'll never know why because they avoid her. Maybe it's because of the way she can pop out of no where, singing, smiling and usually scaring somepony to death. Perhaps it's because of her cutter behavior; the way she slices scars from blades up and down her hooves.
The only pony who can possibly find any love for the baker is Rarity, a dress maker that knows her struggle with fillyhood depression; her father left her for another mare in Manehatten and her mother treated her like a rock. Pinkie can usually live with these scars...until Applejack and Rainbow Dash jump her in a fit of jealously over a gift she received. So when she snaps, she decides to go for the ring leader of the five mares-Twilight Sparkle- and do something that nopony dares to do: she commits a bloody, satisfying murder.