Ye-eun is feeling down on her 32nd birthday because her lingerie business failed, and she had to return to her hometown, which she had hoped to leave behind. Her friend tries to lift her spirits by giving her a unique and shiny sex toy that she decides to use later that night. However, the next morning she wakes up with no recollection of the dildo and only fragments of a harsh bondage encounter with an unknown person. The mystery of the anonymous man still lingers.