The men approach married women on the street under the pretense of conducting a survey, but they don't stop so easily. They persist and offer a reward to lure them into the filming van, where they get to reveal details about their nighttime marital life. These married women are all somewhat sexually frustrated and love masturbation, but they still prefer real penis. Will the wives, gradually aroused by the pickup artists' teasing, abandon their chastity, thinking, "If only my husband doesn't find out..."? This time, they capture Yumi, a beautiful 27-year-old wife married for six years. She confesses that her marital life has been declining recently, and although initially shy, she gradually reveals her lewd nature. In fact, being in front of a stranger makes her even more uninhibited and she climaxes wildly!