Naoko is a serious and kind woman—the kind of ordinary housewife you might see anywhere. Yet she longs to escape the monotony of her everyday life, leading her to embark on an affair-filled trip. At first, she's tense and a bit hesitant, but gradually she warms up to her companions. As her guard lowers, her sensual side begins to emerge, and she finds herself craving intimacy over and over again. Before long, Naoko transforms from a plain, average wife into a seductive and captivating married woman.