Airi has a wonderful, older boyfriend and is very happy, except for his erectile dysfunction, which prevents them from having sex. One day, on their way home from a date, her boyfriend takes her to a suspicious, members-only casual bar. She has a particular fetish: she gets excited by seeing her girlfriend orgasm with other men's penises. Although she hates it and wants to go home, she is repeatedly reprimanded by the men around her and watched by her boyfriend and a group of other men, gradually succumbing to the pleasure of orgy at the casual bar…