With the boutique out of business and her relationship with her sister Sweetie Belle in ruin, Rarity is on the brink of insanity. But when a shifty unicorn named Night Greed appears at her front door offering her a way out, she must choose whether to leave her life of glitz and glamor behind and join Night Greed's organization known as "Black Hoof", or try to salvage her relationship and her business from the dirt.