In Tokyo, a certain massage parlor has been involved in illegal indecent massage sessions performed on underage schoolgirls who are still sexually underdeveloped. Word of mouth has spread about the shop, and despite their anxiety, some girls who wonder, "Could I be sexually numb?" come seeking treatment. However, through intensely stimulating massages unlike anything they've ever experienced, these girls gradually awaken to pleasure, dripping cloudy fluids while becoming helplessly addicted to the sensations. Their bodies, now overflowing with pleasure, feel as if every inch of their skin has transformed into an erogenous zone, leading more and more female clients to return for repeat sessions.