Rui, a newly married woman who has just decided to get married, is forced to share a hotel room with her boss during a business trip due to a cunning plan. Rui continues to resist her boss' advances, but she gives up and begs him to let her wear a contraceptive, but he insists that anal sex is okay and inserts it raw into her anus. The dilemma she feels about herself, which she cannot tell her husband about, increases her pleasure even more, and she finally falls into despair.