Nakata, who had been properly fulfilling his duties as a teacher, is nearing retirement and goes mad. One day, he discovers a student's hidden camera footage. To confirm the contents, he seizes the camera and finds data of Shiori changing clothes and swimming in the water in her swimsuit. The tight swimsuit accentuates Shiori's slim yet feminine figure, and her plump buttocks. Excited by the unexpected sight of his student, Nakata instructs the student to continue taking hidden footage. Awakening to a new fetish for swimsuits, Nakata abandons his serious lifestyle of several decades and becomes honest with his own desires...
