Chiaki is a devoted wife and mother living a generally happy life, but she struggles with a lack of intimacy in her marriage. One day, after receiving a simple, light massage for the first time in a while, her body reacts intensely—so much so that she writhes in overwhelming pleasure even before undressing, moaning and screaming uncontrollably. Her responses are so vivid and realistic they mimic actual intercourse, leaving viewers breathless with excitement. Soon, just having her tongue kissed and her nipples licked drives her to cry out loudly, "Ahh~", "I'm feeling it~!" She reaches the eighth level of arousal without even having her panties removed. What will happen when she finally hits the peak? This documentary-style, amateur production realistically recreates the passionate sex life between mature couples, delivering nonstop excitement from start to finish.