Cora is a Mexican prostitute with typically inconsiderate johns. She is troubled by a hole in the ceiling. The hole triggers flashbacks regarding how she got to where she is; she hooked up with a gringo and got involved in digging a well. A horse thief given up for dead gives them a hand.
A doctor kidnaps couples who are having sex and takes them to his mansion where they are being kept as prisoners. He injects his subjects with a substance to 'enhance' their sexual abilities. The curious doctor then forces the abducted people to have sex. While they are making love he drains a fluid from them. He needs this to prevent himself from being transformed into a monster. He gets his instructions from a talking brain.
A group of young aristocrats lock themselves up, for fun, on a terrace in a wealthy building in Buenos Aires. Their parents try to get them out, but they threaten to jump down if any adults enter the terrace.
