A woman named Karen runs her own female-only esthetic salon. She has been struggling financially for three years since opening her business due to lack of customers. As a last resort, she decides to accept male clients as well. One day, her first male client arrives. Filled with excitement and nervousness, she can't help but stare at his impressively large erection while giving him a massage. He notices her distraction and takes advantage of his massive member by aggressively attacking her...

個人経営の女性専用エステを営む人妻・かれん。3年前に開業したが、客足がなかなか伸びず赤字続きの日々…改善策として思い切って男性客も受け入れることになった。ある日、初の男性客が来客する。喜びと緊張のさなか、なんとその男は施術中に自身の勃起した巨根を見せつけてきたのだ。かれんは男の巨根に目を奪われ施術に集中できなくなってしまう。その様子に気づいた男はその猛々しい巨根でかれんに襲い掛かり…。