Nozomi, a pure and innocent beautiful girl, begins attending flower arrangement classes. Captivated by her untouched beauty, the male instructor promises her a spot in an upcoming competition and invites her to private lessons. Trusting him completely, Nozomi starts attending regularly, but the nature of the lessons gradually takes a darker turn. Claiming it is "to cleanse impure thoughts," the man ignores her resistance and progressively introduces erotic elements into the training. As fear and confusion grow within her, Nozomi finds herself drawn into his words and control. Through this process, she is stripped of the ability to confront her own body and emotions, ultimately led into a new, submissive realm.