Lady Next Door explores what it means to 'lead a marriage life' in a cheerful manner through looking into the daily lives, including marriage life and extramarital affairs, of three married couples in their 30's living in the same middle-class apartment building. The three couples, unexpectedly faced with a critical moment of their marriage lives with belated love(i.e. extramarital affairs), wisely overcomes the crisis with the help of their skills accumulated in seven years of marriage life, crying, laughing, loving and hating. There is a saying, ground packs after a rain...