Against this backdrop, Freder, the son of the city's plutocratic ruler, falls in love with Maria, the leader of the workers. Concerned that Maria will spark an uprising among the workers, Freder's father orders her captured. He then uses a robot made to look like her to spread disorder among the workers with the goal of creating a pretext for an attack against them.
資本家佛萊德對工人階級領袖瑪利亞一見傾心，將她抓走，依她的外貌複製成機器人，意圖利用瑪利亞來控制工人，竟釀成暴動。