抗战胜利后,建筑(zhù )工(✒)程师丁建华(石(shí )羽饰)(🃏)偕妻(😘)漱兰(路(🔱)明饰(shì ))返回上海,暂(🆖)居远亲龚某(蓝(lán )马(mǎ )饰)家。龚原系包工(⏬)头,沦陷(xiàn )期间曾以物(wù )资资敌而致富,胜(shèng )利(lì )后以五百根金(jīn )条买(✳)得“地下工作者”身(shēn )份,得以逍遥法外。时漱兰将分娩,丁(dīng )母(王苹饰)卧病(🌙)不(📎)起(🧚),丁多(🥁)方奔走,仍找(zhǎo )不(bú )到工作(💱)和(hé )住(zhù )(🌑)房。不久,漱兰(🗞)生一男孩,因无(🙌)力抚养,准备(👓)送往孤儿院。龚(🈴)某(mǒu )因无后,愿将婴儿收留抚养(💠)。龚(⛳)妻(上官(guān )云(🕐)珠饰)(🚴)对婴儿(ér )任意虐待,漱(🈁)兰不忍(rěn ),龚(gōng )妻又(yòu )(🍑)将婴儿掷还漱(shù )(🦇)兰。建(jiàn )华夫妇遂迁(qiān )出龚(🥋)宅,寄居一(🌼)巨厦檐下。一天(tiān ),建华(huá )发现巨(🈺)厦为自(🔍)己(jǐ )当(dāng )年(⏲)设(shè )计建造。拾(🥤)阶至(👵)顶,念在(🐞)己身为建筑(🚲)师(📐),竟无栖身之(zhī )所,悲愤(💣)欲绝,忽闻(wén )楼下喧哗(huá )声,缘(yuán )门警正驱逐漱(shù )(🍺)兰,丁气(🛃)极(⏺)失(👩)足坠楼,待众人(rén )抢救,已奄奄一息。警(💁)察(chá )拾其遗(yí )(🔮)落(👅)皮包,见建筑工程师(shī )证件(jiàn ),众(💛)皆摇首叹息(🏡)。