妻とのセックスレスや、家計を巡る口論にストレスを抱えるサラリーマンの正志は、欲求不満を解消するため風俗店を訪れる。そこで偶然、源氏名「ふうか」として働く憧れのママ友・玲香と遭遇する。互いの素性を隠す約束をした二人は、夫の浮気に悩む玲香の境遇も重なり、店での逢瀬を重ねるうちに深く溺れていく。

Masashi, a salaryman stressed by a sexless marriage and arguments over household finances, visits a sex establishment to relieve his frustration. There, he coincidentally encounters Reika, a fellow mother he admires, who works there under the pseudonym "Fuuka." The two agree to keep their true identities secret, and as their circumstances align—Reika is troubled by her husband's infidelity—they begin meeting at the establishment and become deeply involved with each other.