しおはダンスサークルに所属する大学生。SEXのテクは拙いながらも、愛情深い彼氏との同棲生活に特に不満もなく過ごしていた。ある日、しおは自宅でダンスの練習中に足を挫いてしまい、治療のため派遣マッサージを呼ぶ。マッサージ師にきわどいところを触られるうちに、今まで秘めていた性欲がふつふつと湧き、次第に自分から敏感なところを触るよう求めてしまう。
Shio is a university student who belongs to a dance club. Although her sex skills are poor, she is living with a loving boyfriend without any complaints. One day, Shio strains his leg while practicing dance at his girlfriend’s home, and calls a dispatched massage service for treatment. As he is being touched by the masseuse in his sensitive areas, the sexual desire he had hidden up until now suddenly arises, and he gradually asks her to touch his sensitive areas.