夫は2年前から単身赴任、今は娘夫婦と同居しているかんな。ある日、酔っぱらって娘と勘違いした娘婿・一郎に求められた彼女は、彼のあまりに立派なデカチ○ポに心奪われてしまう。それ以来、巨根の虜になった彼女は「娘夫婦の為」と言い聞かせ、昼夜を問わず、事あるごとに一郎を露骨に誘うのだった。手段を選ばぬ義母の妖艶な魅力に抗えず、欲求不満の娘婿は幾度も義母に搾精され続けて…。
My husband has been single for two years, and now I live with my daughter and her husband. One day, she was asked by her son-in-law, Ichiro, who got drunk and mistook her for her daughter, and she was fascinated by his too splendid decachi ○ port. Since then, she was captivated by the big cock, telling her that she was “for her daughter’s couple”, and blatantly invited Ichiro at every opportunity, regardless of her day or night. Unable to resist the bewitching charm of her mother-in-law who does not choose her means, her frustrated son-in-law continues to be squeezed by her mother-in-law over and over again.