文慧（罗美薇）与友明头（刘玉翠）欲成为歌星，可惜文慧因家庭问题被迫到夜总会工作，因与黑帮头目B哥发生争执，惹祸上身，幸得车房仔阿忠（张家辉）及May姐（蓝洁瑛）、健哥（成奎安）相助脱离险境。阿忠对文慧情有独钟，但文慧一心仰慕新进男歌星Peter（吴大维）。另一方面，明头却对义薄云天的忠产生好感，一对女友的感情生活顿起波澜……
影片叙述一个妓女和她的情人寻求拯救他们灵魂的道路，使他们从污泥中的儿女变成太阳下的儿女。当剧中的男主角鼓起勇气在象征邪恶的坏蛋脸上打了一个耳光以后，他们两人终于获得了他们所追求的目的。
《光与铁》是一部讲述因丈夫们的交通事故而交织的两名女子和围绕她们发生的秘密故事的电影，是执导短片《喊声》《季节》《冒险》等的韩国电影学院出身导演裴钟大执导的长篇处女作。 《光与铁》曾获邀参与第21届全州国际电影节、第43届首尔独立电影节、第24届塔林黑夜电影节。主演廉惠兰更在全州国际电影节上获得了演员奖，备受瞩目。
The true story is of Ivan Sanchin, the KGB officer who was Stalin's private film projectionist from 1939 until Stalin's death. Told from Sanchin's view, the sympathetic but tragically flawed hero, squirrel, maintains unwavering faith in his "Master" despite the arrest of his neighbors and his involvement with their daughter, his wife's affair with the chilling State Security chief Lavrentii Beria and her tragic decline, and the deadly political machinations within the Kremlin he witnesses firsthand.
