15-year-old Livia gets back on her feet after falling from her horse with the help of Jean, a volunteer fireman with whom she falls in love. A few days later, vacation begins. She will remain in the small village in Provence where she lives with her mother. The girl, alone and exasperated, will stop at nothing to conquer this older man. Her love consumes her, driving her into a mounting frenzy, until she commits an irreparable act.