Eimi Kuromiya is not satisfied with sex with her husband. To satisfy her sexual desire, one day she meets a man on a dating app on her smartphone. During sex with the man, she experiences the pleasure of vaginal orgasms, something she has never experienced before. However, it was meant to be a one-time mistake for Eimi. A few days later, the man from the dating app comes to her house with his friends. The men put her husband to sleep with drugs and make Eimi orgasm wildly to their lust. Eimi also becomes addicted to the pleasure torture of vaginal orgasms.