Rainbow has to take the edge off of being in heat, and smelling other mares' heat. She finds a good way to do so in a surprising place.

However, she's not satisfied with just this...

Chapter One: Futa, masturbation
Chapter Two: Futa, Impregnation
Chapter Three: Futa, Impregnation, Anal, Implied Bestiality, Family Planning to be Awesome
Chapter Four: Food Play, Futa, Grievous Misuse of Alliteration, Implied Swinging, Planning to Impregnate Pony Princess Plots
Chapter Five: Incest, Threesome, Impreg, Futa
Chapter Six: Lingerie, Whorse, Futa, Impreg, Implied Sexy Times for Business Deals
Interlude 1: Sex Planning, Shameless Flaunting, Cute Horse
Chapter Seven: Frenimies, BDSM, Verbal Debasing, Egg Batter
Chapter Eight: Consensual Mind Control, Implied Lesbian, Impregnation, Futa
Interlude 2: Domme, Attempted Second Hand Pregnancy
Chapter Nine: Public indecency, Shameless Lesbian Hijinks, Magicocks, Futa, Voyerism, Swallowing Second Hand Cum
Chapter Ten: Cucking, Debasement, Futa on Male, Threesome, Trains