Yuko is a maid. This time she has been assigned to a new family. When she first met the homeowner, she was warmly welcomed and shown around the house. When they reached the son's room, the homeowner did not want Yuko to enter because he was studying for his legal exams and should not be disturbed. After the introduction, the homeowner quickly left, leaving everything to Yuko, who felt confused and strange. Nevertheless, she continued her work as a maid, cleaning the house and cooking for the master. After placing the meal tray in front of the room, just as she turned away, the door opened. Yuko curiously looked inside and was pulled in by him. And Yuko's hellish time officially began from here...