Nurse Megumi Asaka undergoes a series of provocative examinations by Doctor Usoki, who is obsessed with the melodious sounds her body makes. After consuming a mysterious "special milk" that triggers intense physical arousal and cravings, Megumi struggles to maintain her composure. Amidst these erotic encounters and a strange memory of hypnotic commands, Megumi's fixation on her colleague Kanae's impressive figure grows, leading to her eventual transfer to the same nursing building.