As a teacher, Chisato is scouting students and makes a home visit to her student, Uemura. There, she learns about sexual problems unique to adolescence. She wants to solve Uemura's problems. If possible, she wants to become his first woman... Driven by her mission as a teacher and her womanly desires, Chisato-sensei seduces Uemura. After connecting with each Kokoro through a deep and passionate kiss, the teacher and student cross a line that should never be crossed...