Ai, a married woman living in an apartment complex, spends her days masturbating to relieve her frustration at her husband not making love to her. The manager hears her moans through the thin wall. Knowing her frustration, he resorts to the brutal act of rape. Ai, who should be shocked by being raped, unexpectedly climaxes from sex that she hasn't experienced in a long time. Having discovered the joy of being satisfied, the wife seeks pleasure more than guilt and seeks out the rapist man for more intense adulterous sex!