A married woman named Yu has been feeling sexually frustrated due to her husband being away on business trips most of the time. One day, while masturbating with a large dildo that was much bigger than her stepchild's father's penis, she accidentally gets caught by him. Initially shocked, she tries to apologize but becomes captivated by his impressively sized erect member...

再婚して2年、旦那は単身赴任中で滅多に家に帰ってこない。ゆうは欲求不満でたまらずオナニーをしていたのだが、旦那のイチモツよりはるかに大きいディルドをしゃぶっているのを旦那の連れ子に見られてしまう。驚かしてしまったことを謝ろうとしたが、勃起させながら寝ていた連れ子のチ〇コの大きさに魅了されてしまい…。