Sweet sandy blonde Julia is a Sunday School teacher, a young woman who is in school studying to be an educational teacher as well. One Sunday after consulting with one of the teen girls in her Sunday School class, Julia is about to get an education herself, one she never studied for.
Having been called a prude many times, Julia isn't ashamed of the word. Words can't hurt her and names are just words, so prude isn't insulting. She knows that to turn out healthy and respected takes the proper upbringing, the proper behavior, and the proper attire and look. Her neighbor Matt inadvertently starts Julia on the path to all things improper.
Matt has just gotten a new motorcycle, a chopper in fact, 1969 custom stretch, a machine of power like no other on the block. He's out working on the bike when Julia gets home from church and after noticing her checking it out, curiosity piqued by the incredibly loud rumbling growl of the engine, Matt asks her if she'd like to go for a ride.
He's thrilled at owning his new toy, eager to share it with anyone else. As Matt puts it, every bike is either a him or a her and this chopper is definitely a 'him'. Matt tries to convince her that a short ride around the block on 'him' would be fun, though he knows Julia's conservative shy ways. Still, after some talking, Julia agrees to just sit on it for a moment, to feel the power of this machine Matt is so proud of.
As soon as Julia is on the chopper, everything feels different. As though she knows it was a mistake, Julia can't put words to her fears until Matt offers to crank the throttle for her. That is when sweet sandy blonde Julia, Sunday School teacher and mentor to teenage girls, experiences her very first orgasm.
The thrust and vibrations, the growling, is all more than Julia can handle. She climaxes like she never imagined, the pleasure striking in tidal waves, one after another. As soon as Matt stops moving the throttle, Julia looks over seeing a stunned expression, embarrassment overflowing as she quickly runs home.
Her hope is to never speak of the incident again but unknown to Julia, Matt's chopper is no ordinary machine. Something has been awaken inside her, a controlling desire and longing made real by the 'him' inside that chopper.
As she wakes each day during her week, Julia finds it harder and harder to resist becoming what her mind tells her to become. Innocently heading to a salon, Julia dyes her hair, a bold burgundy shade. Innocence is quickly lost as she soon is dressing more provocatively, eagerly pleasuring herself to thoughts of bikers and specifically Matt's chopper.
It all takes a turn for the extreme with her first visit to a tattoo shop, the prudish dam broken and all the depraved desires of hell unleashed. Julia takes on a new name and more ink than any first timer ever has.
Julia has descended into a carnal chaos with two wheels, open road, and eagerly open legs. By the time Sunday rolls around again, the teen girls she mentors will never recognize her and Julia will be teaching a whole different lesson.