In a remote rural town lived two men: Gyoromatsu Hashishita, renowned as a master of nighttime visits, and Senkichi Nitta, a novice. They would sneak into various houses and enjoy having intense affairs with all sorts of women around the town. One day, as usual, Senkichi was hurrying towards his new target house under the moonlight, but he was restless. This was because his target for that night's visit was Oyuki, the woman he was deeply in love with. A romantic porno depicting the fate and hard-ons of these genius nighttime visitors.

大学入試に失敗した彼女は予備校に通うために上京した。そして止宿先の姉夫婦の家へ行く電車の中で初めて痴漢に遭い、奇妙な感情の高まりを経験したが、姉夫婦のセックスを見たショックと共に彼女は男と女の関係に興味を抱くようになっていった。そして、同じ予備校生と初めて体験をしたが悦びよりも痛みしか感じなかった。こうして彼女は大都会で性体験を重ねていく…。

Hayai, a single employee of a first-class trading company, enjoys groping women on the morning commuter train. One day, he is caught in the act by his boss, Director Sukegawa. However, he is also a veteran groper and his hobby is peeping.