For his latest filmic exploration François Ozon addresses a complex mix of sexual, personal, social, familial, gender-based, and technological issues, inexorably honing in on a striking synthesis of generational catharsis. That he does so via a story about Isabelle (exquisitely played by newcomer Marine Vacth), a beautiful bourgeoisie and a 17-year-old DIY prostitute, reflects the growth of one of France’s most consistent filmmakers — one of few who develops in proportion to the promise of his well-seeded career.

Set over the course of a year, the film uses the age-old narrative form of seasonal changes to mark Isabelle’s fluid transition from virgin to sensual mistress. Most of her clients are men old enough to be her grandfathers. To call Marine Vacth’s fearless performance extraordinary barely scratches the surface of her finely crafted, transparent portrayal. Vacth isn’t merely precocious; she is a force of unbridled feminine and intellectual nature. Isabelle has important lessons to teach, as well as to learn.

Ozon takes “meta” liberties when he shows Isabelle and some of her high school classmates reciting quotes from Arthur Rimbaud’s poem “No One’s Serious at Seventeen.”

"On beautiful nights when beer and lemonade

And loud, blinding cafés are the last thing you need

You stroll beneath green lindens on the promenade.”

The unapologetically poetic direct-to-camera sequence captures much of the naiveté, seething lust, and directionless ambition that Isabelle seeks to shed through her computer-facilitated double life of erotic experimentation. Her journey will be a quicksilver submersion into a lifetime’s worth of sexual experience and ever-changing needs and desires.

In keeping with Ozon’s non-judgmental approach to his characters in such films as “Hideaway” and “In the House,” the filmmaker never veers into melodrama or exploitation regardless of how tempting the subject matter might seem on the surface. That’s not to say that Ozon doesn’t regard the erotic nature of Isabelle’s endeavors with the sexual directness they deserve. The audience experiences her erotic journey in relation to the sense of liberation she discovers along the way. If that freedom comes with a cost of cynicism, then the lessons are all the more truthful for her paying that price. There is a cost to wisdom — regardless of how it is achieved.

When Isabelle witnesses her judgmental mother Sylvie (Geraldine Paihas) secretly flirting with a man with whom she may be having an adulterous affair, it seems to support Isabelle’s bold if hazardous attempt at getting to the bottom of a romantic illusion that is too limited and naïve for her mature constitution. Isabelle always gravitates to the bottom line in human relations. An uncomfortable sequence where she gauges her step-father’s lustful ambitions presents one of the film’s more challenging scenes.

Gorgeously filmed by cinematographer Pascal Marti, “Jeune & Jolie” (“Young & Beautiful”) is a patient film that delves thoroughly into the generational mindsets of its age-disparate characters. Charlotte Rampling helps send the narrative to its evocative conclusion as a woman called Alice, the wife of one of Isabelle’s clients. You will never forget this truly mind-blowing film.

Not Rated. 95 mins. (A+) (Five Stars - out of five/no halves)