She'd barely gotten past her Cuteceñera when a cruel, jealous bully turned Rarity into a perverse monster. Never again able to live as a normal pony, she is a creature that can only eat semen… And possesses a voracious appetite against which all resistance crumbles. Now, as her perverted body nears its maturity, Rarity is faced with the fact that the life she'd struggled to make for herself will be destroyed by an eternity of unnatural needs.

Even as Rarity gives up, however, a stubborn earth pony is willing to sacrifice her own future to comfort the mare she loves.