Obedient housewife fucked on stage tied in bondage

Once-demure and obedient housewife Shizuko's whole world is turned upside-down after her first time onstage being tied in bondage, fucked, and made to cum in front of an audience of hundreds. She resolves to become the perfect slut, submitting to every pussy training exercise her new masters give her. But what Shizuko doesn't know is that her stepdaughter, Keiko, is undergoing slut training too! At the next show, Shizuko will meet a strap-on wearing Keiko on stage for what's billed as the ultimate lesbian scene. Will the busty stepmom give in to her forbidden lusts?