Joon hyeok is preparing to pass the exam for level nine government staff. Since this is his third attempt, he is sure to pass the exam this time. He moved into a boarding apartment as part of his father's special measures to help his son with his studies. But what awaits Junhui in the luxurious house is not thick textbooks, but two free and unrestrained women. Joon hyeok began his cohabitation with the owner of a boarding apartment full of sexy beauties, Aqiong, and the nurse Dal lae, who exudes sexiness from his face and body. Since then, Junhui has started studying women every night instead of his books.
这一次，《公安九课》帮助《公安六课》秘密解决了一名程序员逃往另一个国家的麻烦和琐事，还卷入了传说中的黑客“傀儡老师”的犯罪事件。就在行动陷入僵局的时候，木偶老师竟然不请自来，出现在了公安九班！苏西和她的同志们在不知不觉中卷入了一场涉及政府的阴谋。
