歐(ou)洲(zhou)某國的(de)(de)安妮公(gong)(gong)(gong)主(zhu)(zhu)（奧(ao)黛麗·赫本(ben) Audrey Hepburn 飾(shi)(shi)）到訪羅馬(ma)(ma)國務(wu)煩身但她又(you)厭倦繁文縟節一(yi)天晚上(shang)身心俱疲的(de)(de)她偷偷來到民間(jian)欣賞(shang)夜(ye)景巧(qiao)遇報社記者(zhe)喬(qiao)（格里(li)高利·派克 Gregory Peck 飾(shi)(shi)）二人把手(shou)同游相當(dang)快樂公(gong)(gong)(gong)主(zhu)(zhu)更是(shi)到喬(qiao)的(de)(de)家(jia)中(zhong)(zhong)作客并在(zai)那過夜(ye)　　不(bu)料喬(qiao)無意中(zhong)(zhong)發現了(le)公(gong)(gong)(gong)主(zhu)(zhu)的(de)(de)真(zhen)實身份他決定炮(pao)制一(yi)個獨(du)家(jia)新聞于是(shi)喬(qiao)和朋(peng)友、攝影師歐(ou)文（埃迪·艾伯特(te) Eddie Albert 飾(shi)(shi)）一(yi)起帶(dai)公(gong)(gong)(gong)主(zhu)(zhu)同游羅馬(ma)(ma)并且(qie)偷拍了(le)公(gong)(gong)(gong)主(zhu)(zhu)的(de)(de)很多生活照(zhao)然而在(zai)接下來與公(gong)(gong)(gong)主(zhu)(zhu)的(de)(de)相處中(zhong)(zhong)喬(qiao)不(bu)知不(bu)覺戀(lian)上(shang)了(le)公(gong)(gong)(gong)主(zhu)(zhu)為了(le)保護公(gong)(gong)(gong)主(zhu)(zhu)的(de)(de)形象喬(qiao)只能忍痛拋棄(qi)功成(cheng)名就的(de)(de)良機將照(zhao)片送予了(le)公(gong)(gong)(gong)主(zhu)(zhu)　　安妮公(gong)(gong)(gong)主(zhu)(zhu)在(zai)經歷了(le)羅馬(ma)(ma)一(yi)日假(jia)期(qi)后反而體驗了(le)自己對國家(jia)的(de)(de)責(ze)任(ren)毅(yi)然返回(hui)了(le)大(da)使館為了(le)本(ben)身的(de)(de)責(ze)任(ren)而果斷拋棄(qi)了(le)愛情