Submissive adult cross-dressing cosplayer Ruri is invited to what she thinks is a costume meeting, only for one group member to monopolize her cock and ass. In a public building they trade blowjobs in view of passersby, force deep oral to ejaculation and swallowing, insert a vibrator deep into her rectum, and pound her ass until she screams through repeated anal orgasms before semen is sprayed over her gaping hole. At the hotel they continue with mutual deep oral, anal vibrator play, throat pounding, and affectionate anal sex. Three unfamiliar men then burst in, turning the encounter into an unplanned five-way where Ruri is penetrated, covered in cum, and repeatedly driven to anal climax.