Ai, a married woman, witnesses her neighbor Ogawa drying himself naked. The moment her eyes are captured by his thick, sagging penis, their eyes meet and Ai runs away. The next day, Ai starts masturbating out of frustration, but Ogawa witnesses her indecent behavior. Ai explains the situation to Ogawa, who runs away. The two become close and close the gap. The two, who were never meant to meet, end up in an affair so intense that they end up sweating after witnessing each other masturbating...