The diabolical Dr. Freda Frankenstein needs special blood for her youth serum, so she dispenses a man-beast named Ursus to get luchador El Santo to donate to the cause. The masked Mexican is captured and taken to the House of Frankenstein, where he must figure out a way to defeat the not-so-good doctor and her monstrous minions. Gina Romand, Gerardo Zepeda also star. 97 min. Standard; Soundtrack: Spanish; Subtitles: none. In Spanish; no subtitles.