讲述了一个童话般的故事，邪恶而贪婪的银行家收到名为“犹德士”的复仇者的来信，如果他再不改邪归正，第二天的午夜十二点他将得到死亡的惩罚。预言果然应验（犹德士以带着巨大鸟头的魔术师形象现身，像死神一样翩翩而至），银行家暴毙在舞会上留下了他无助的女儿。女儿散尽家产为父亲赎罪，没想到因此使犹德士宽恕了父亲的罪行。 　　乔治·弗朗叙作为1936年成立的法国电影资料馆创立者之一，将他的毕生精力投入到电影资料收集保护的工作中。可以说《犹德士》就是一部向电影之父路易·费雅德致敬的影片，后者在1916年导演了第一版《犹德士》。在借鉴费雅德版本的基础上，弗朗叙既保留了原作探险的故事情节，又加入了自由的基调。影片自始至终充满了讽刺的意味。Favraux, an unscrupulous banker, receives a threatening note, signed by "Judex", demanding that he pay back the people he has swindled. He refuses, and apparently dies after a midnight toast at his masked ball. However, he is only drugged by Judex and locked away. Judex spares his life when the banker's widowed daughter, Jacqueline, rejects the inheritance. Meanwhile Diana Monti, the former governess, kidnaps Jacqueline to try to get the banker's money. But Judex is hot on her trail.