A horny married woman named Yurine finds herself desperately wanting some dick while her husband is away on business trip. One day, she accidentally catches sight of her son's friend, Kouki's huge cock and becomes instantly infatuated with its size and strength. She starts teasing him, not realizing how insatiable his sexual appetite really is. Despite trying to resist, Yurine can't help but get fucked over and over again by Kouki's incredible stamina. As their passionate encounters continue, Yurine's body begins to scream out in pleasure...

旦那は長期出張で普段から欲求不満なゆりねは、息子が連れてきた友達・浩介のチ〇ポを偶然目にして…。その逞しさに心奪われた彼女は、軽い気持ちで彼を誘惑してしまう。若い男の性欲を侮ってたゆりねは、一度や二度の性交で収まらぬ浩介の絶倫っぷりに数え切れぬほど犯●れ続け、イカされ続けるのだった。その日から繰り返された強●絶頂の日々に、ゆりねの肉体はいつしか悲鳴を上げて…。