夫婦間のセックスレスに悩むひかりはある日夫から「夫婦交換クラブ」への登録を提案される。聞き慣れない怪しい団体に猛反対するが夫に説得され根負け。早速とある夫婦と交換SEXをすることとなった。最初こそ拒絶するひかりだったが、夫では感じられない快楽にハマっていき…チン負けした淫乱人妻がSEXに溺れる。
One day, Hikari, who is troubled by the lack of sex between her husband and her husband, suggests that she register for a “couple exchange club.” She vehemently opposes a suspicious organization that she is not used to hearing about, but her husband persuades her and she gives in. She immediately decided to have sex with a certain couple. At first, she rejects Hikari, but she becomes addicted to the pleasure that her husband cannot feel… A slutty married woman loses her mind and drowns in sex.