Ayaka, a hot wife from her days as an office lady, invites her senior husband and wife to her home and suggests swapping wives. Ayaka, who has been trained by her indecent husband, seduces the other husband by showing him her pantyhose and pressing her sexy butt against him, and excites him by showing him the other husband having sex with his wife. The man is not keen at first, but he shows off his insatiable sexual prowess at the pervert couple's overly erotic invitation. Ayaka, drooling with excitement.