Penniless, Baron Frankenstein, accompanied by his eager assistant Hans, arrives at his family castle near the town of Karlstaad, vowing to continue his experiments in the creation of life. Fortuitously finding the creature he was previously working on, he brings it back to a semblance of life but requires the services of a mesmerist, Zoltan, to successfully animate it. The greedy and vengeful Zoltan secretly sends the monster into town to steal gold and 'punish' the burgomaster and the chief of police, which acts lead to a violent confrontation between the baron and the townspeople. 身无分文的弗兰肯斯坦男爵（彼得·库欣 Peter Cushing 饰）结束了在外的漂泊，和对他不离不弃的助手汉斯（尚多尔·埃莱什 Sandor Elès 饰）一起，他们回到了位于卡尔斯塔德镇附近的家族城堡里。在这里，弗兰肯斯坦男爵决定要继续他创造生命的疯狂实验，无论经历了多少失败，他都不会放弃。 幸运的是，在城堡里，弗兰肯斯坦男爵发现了他之前的实验研究体，男爵找来了名叫佐尔坦（彼得·伍德索尔普 Peter Woodthorpe 饰）的心理师，想要通过催眠的方式来使研究体复活。哪知道佐尔坦是一个心术不正的男人，他暗地里指示实验体去附近的小镇偷金子，结果引来了镇长和居民们的不满。
