新築のマンションに引っ越してきた黒川夫婦。妻の菫（すみれ）は美しく周囲への気遣いも完璧ですぐに他の住人とも馴染んでいった。そんな菫の優しい気遣いを好意だと勘違いした隣人の男。夫が仕事に向かった隙を狙って清楚な人妻がセックス狂いの肉オナホにされていく…。

The Kurokawa couple moved into a newly built apartment. The wife, Sumire, is beautiful and considerate of others, quickly becoming friends with the other residents. However, a neighbor misinterprets Sumire's kindness as affection. Taking advantage of the moment when her husband is at work, he turns the innocent housewife into his sex-crazed human sex toy…