Rarity Belle is the number one ranked student in all of Equestria. Other than that she is an ordinary teenage girl in her final year of high school. She leads a nice, comfortable life. A normal life. A boring life. Overcome by boredom and sick of the rotten and infested criminal state her world has become, she desires to do something more. She wants the world to know of her existence.
When a Dusk Note, the tool used by the Yorugami to kill humans, drops from the sky into her path, Rarity takes the oppurtunity to purge the world of all evil. Under the eye of Luna, the Dusk Note's original owner, Rarity finds herself face to face with an all out war to stay alive in the name of justice. A war with a mysterious detective known only as Dash.