Yumi Kazama, a housewife, visits the hospital due to poor health, but the examination takes an unexpected turn. When the doctor begins using a stethoscope, he suddenly says, "I'll now perform a physical examination, so please remove your top." Under an eerie atmosphere, the examination proceeds. The doctor focuses intensely on Yumi's massive 90cm breasts, groping them aggressively, squeezing her nipples, and engaging in increasingly excessive acts. His expression reveals a disturbing sense of pleasure as he watches her. After the examination, even more extreme and lewd acts await, pulling Yumi into a whirlpool of confusion and fear as she's helplessly consumed by the situation.