Working as a new nurse at a hospital in Tokyo, "Soyoka" is inexperienced and still learning how to interact with patients. Rumors have begun to circulate among the staff—some nurses secretly offer sexual relief to patients through discreet signals. Unwilling to believe such stories, Soyoka focuses solely on her nursing duties. One day, she receives instructions from a senior nurse to perform a checkup on a male patient in a private room, despite him not being under her care. As Soyoka begins the examination, the man suddenly starts undressing in front of her, revealing a fully erect, throbbing cock. Shocked and confused, Soyoka finds herself drawn into the situation against her will.