In the studio before filming began, director and actor were discussing something suspicious. It seems they had planned to use an illegal stimulant called 'racing horse excitement drug' without Roxanne Hana Koi's knowledge to make her extremely horny... Little did she know that while she was busy pleasuring herself with one of the men, the drug-laced lubricant was being applied to her sensitive areas! As the drug spread throughout her body, causing intense heat, Roxanne begged for real cock instead of the toys. Her moans grew louder as her partner expertly teased her swollen clit until she finally reached climax! Unable to wait any longer, she took matters into her own hands by guiding his hard shaft inside her soaking wet pussy. Overwhelmed by unfamiliar pleasure, she rode him wildly, screaming out in ecstasy as he thrust deep inside her over and over again. With each passing moment, more of the potent stimulant was added by the eager crew members, driving Roxanne further into a state of insatiable lust. She completely forgot about the upcoming scenes and focused solely on satisfying her newfound desires. Losing all sense of reason, she became like a "breeding-only mare" in heat, relentlessly riding her partner's massive cock and taking it balls-deep inside her. As he filled her tight pussy with hot cum, she felt an indescribable satisfaction that left her wanting more.

撮影前のスタジオで、監督と男優がなにやら話し込む。なんと‘‘競走馬を興奮させるための興奮剤’’を内緒で使って「ローレン花恋」ちゃんをド淫乱にしていく計画らしい…。そうとは知らないローレンは、絡み合うように男とベロチューして例の興奮剤をたっぷり塗られたバイブをつるつるマ○コにズブズブ入れられてしまった！膣ナカからどんどん身体にまわり始めた興奮剤のせいで身体が熱くなったローレンは、甘～い声で「おもちゃはイヤ！ホンモノが欲しいの」と男にねだるのだった。びんびんのデカチンでマ○コを擦り上げられたローレンは、発情したメス顔でクリイキしてしまう！待ちきれずに生チンを掴むと、濡れ濡れになったマ○コに当てがってみずから挿入。いつもと違いすぎる気持ちよさに放心状態になり、狂ったように串刺しピストンして乱れまくった！味をしめた監督らにどんどん興奮剤を追加されていったローレンは、次なる撮影内容の説明も聞かずに男優にせまり始める…。理性をなくして‘種付け専用牝馬’のように発情してしまったローレンは、男のパンツを下ろすと騎乗位でまたがり、デカチンに乱れ狂ってハメ潮吹きだしながら中出し懇願！！あふれる精子を膣ナカに押し込み、火照る身体を物足りなげにグネグネとさせるのだった…！！