Twelve young girls with pure pink nipples gather for a session of sexual instruction by an older man. Their beautiful nipples are gradually stained with cloudy white fluid, visually depicting the loss of innocence in a striking and intense manner. Through the guise of guidance from the older man, the girls are shown learning about sexuality. The moment their nipples are tainted by the milky fluid feels like the precise instant their purity is taken. This transformation forms the core allure of the story.