Holding the fort by herself, an assistant is working alone when the power suddenly goes out.
She panics at first, but upon sensing a presence at the front door feels relieved thinking that her work partner has finally returned.
However, much to her surprise, she is greeted with a deep voice and restrained in ropes.

The masked man picks up a pen from the desk... and begins to prod inside her panties with it.

Official Translations:
English, S.Chinese, T.Chinese, Korean