Welcome to the wife-swapping party. I am the host, Tada. The five couples gathered at the venue were filled with tension... Each couple had their own troubles and desires. The wife of a sexually impotent husband, Tada Yukaka, attended the party he prepared. A married woman, Isshiki Momoko, who brought her son while pretending to be with her husband. A married woman, Tomoda Maki, who wants to keep her young lover. A serious woman, Hiraoka Rieko, who is sexless with her husband due to his seriousness. A woman, Mizuno Yuka, whose husband has a habit of cheating. As various schemes intersect, the wife-swapping party begins...
