Des：The three people who have successfully obtained their nursing licenses and are assigned to our hospital undergo a pre-arrival health checkup. This also serves as training for medical residents, and under the guidance of senior doctors and nurses, they undo the zipper with trembling hands and are not allowed to even put on their underwear, and begin their body measurements completely naked. She is forced into an unreasonable environment, but for some reason she reacts twitchingly when the cold instrument hits her bodys mucous membranes...and when the hot instrument is palpated inside her vagina, she enters ecstasy...