Pinkie Pie was the happiest mare in town, but all she ever wanted was Rainbow Dash. Unfortunately, the pegusas gets a new coltfriend, leaving Pinkie with a homicidal thoughts. After one final mental breakdown, Pinkie is released to a state of pure envy and rage, trying anything to get Rainbow Dash to herself, even if it means getting a little messy.

Through many failed attempts, Pinkie's friends start to notice her strange behavior and take the responsibility of trying to help her. Unfortunately, what they didn't notice before is that not all pink mare's with pink mane's and tail's are Pinkie Pie.

Contains RainbowPie and Pinkamena and Pinkie Pie conflict.