Pinkie Pie had been spending so much time dedicating her time to make sure that other ponies would have fun, sometimes even she gets annoyed by laughter. Sometimes she just wants to spend her day as a normal pony being, and yet there is always going to be that mysterious laughter that keeps laughing at everything she says and does. Pinkie Pie decides that enough is enough, and she enlists a help from Twilight to solve her problem.