亡き夫からの『緊縛』が忘れられず、みずから縄をまとってオナニーしている未亡人。麻縄を股に喰い込ませて絶頂するも、どこか埋まらない心の隙間を感じた沙季は、亡き夫が緊縛を習った師匠・堂山の元を訪ねる事に。麻縄がきつく身体に喰い込むほど、鮮やかによみがえる夫との想い出…。堂山に緊縛されて縄酔いした沙季は、素っ裸の首輪姿で調教されるメス犬になっていった。亡き夫に替わって沙季への緊縛を名乗り出たのは堂山の弟子の若い男。自分より年下の男に縛られて恥ずかしい格好をさらした沙季は、ドMの血が騒いで腰振る完全なるメス犬だ。Hカップの巨乳は緊縛縄からブリンブリンに飛び出して、勃起チ○ポを咥えた途端にノド奥までブチ込まれる。子宮を疼かせて股を開いた沙季は、膣奥をガンガンに突かれながら首絞めや呼吸を封じられる拷問にあえぎまくった。騎乗位で腰をつかまれめちゃくちゃにグラインドさせられると、ケイレン止まらず腰クダケのぶっ壊れ状態。生マ○コを白濁精子で汚されて恍惚の表情を見せるのだった。全身ミチミチに緊縛されて迫り来るオーガズムと戦う沙季。全身くまなく性感帯になり、今にもイってしまいそうだ…。ぱっくり開いた充血マ○コをジュルジュル吸われて絶叫すると、意識が遠のいてしばしの静寂が訪れる。やがて下品な音を立てるマ○コから潮が噴き出し、快楽で気が狂いそうな沙季は新たな男のデカチンにむしゃぶりついて離さない。膣いっぱいにねじ込まれたデカチ○ポで何度も絶頂すると、放心して人形のように動かなくなる沙季であった…！！
A widow, unable to forget the bondage inflicted by her late husband, masturbates by tying herself up with rope. She reaches orgasm as the hemp rope digs into her crotch, but still feels an unfillable void in her heart, so Saki decides to visit Doyama, the master who taught her late husband bondage. The tighter the hemp rope digs into her body, the more vividly memories of her husband come flooding back… Bound by Doyama and intoxicated by the ropes, Saki becomes a submissive female dog, naked except for a collar, being trained. A young man, one of Doyama's disciples, volunteers to bind Saki in place of her late husband. Bound by a man younger than her and exposed in such a shameful state, Saki's masochistic ***** boils, and she becomes a complete female dog, thrusting her hips. Her H-cup breasts bounce out of the bondage ropes, and as soon as she takes his erect penis in her mouth, it's shoved deep into her throat. With her womb throbbing, Saki spread her legs and moaned as she was pounded hard deep inside her vagina while being choked and having her breath taken away. When she was held by the hips in the cowgirl position and ****** to grind wildly, she convulsed uncontrollably and her hips gave way, leaving her in a state of complete breakdown. Her raw pussy was soiled with milky white semen, and she showed an ecstatic expression. Bound tightly from head to toe, Saki fought against the approaching orgasm. Every inch of her body became an erogenous zone, and she seemed on the verge of cumming at any moment… As her wide-open, engorged pussy was slud and sucked, she screamed, her consciousness fading, and a moment of silence descended. Soon, her pussy began to squirt, making vulgar noises, and Saki, on the verge of going mad with pleasure, clung to the new man's huge cock and wouldn't let go. After reaching orgasm multiple times with the huge cock twisted deep inside her vagina, Saki became motionless like a doll, in a daze…!

– JavGG.net