A mature married couple invites our protagonist, a naive and horny housewife, to their home through a swapping website. Initially taken aback by the unexpected situation, she watches as her husband passionately kisses another woman while his wife looks on jealously. As they move to the shower room, the two couples engage in intimate activities under each other's gaze. Our heroine finds herself unable to resist the arousal, pleasuring both her own husband and the other man while being penetrated simultaneously. Throughout it all, she can't help but giggle with embarrassment at her newfound promiscuity. Note that recording contents may vary depending on the broadcast method used.