A man curious about the physical development of modern college girls begins a private physical examination with one. Conducting an examination with clinical precision, inspecting every part of her body in detail, their relationship gradually deepens. As the examination progresses, they grow increasingly aware of each other's sensitivity and reactions, building natural tension. Like a detective uncovering hidden secrets, he explores the concealed charms buried deep within her body. As the process unfolds, their relationship escalates rapidly, crossing new boundaries together.