Four nuns are raped by a group of lepers. Although they all turn out to be pregnant, their status is hidden from them in the convent.

In 1965 Mexico City, Flavia, a wealthy yet lonely schoolgirl, befriends Veronica, a young orphan girl who has a fascination with witchcraft. Veronica convinces Flavia that she is a real witch and forces her to be her assistant. The children's games gradually become more serious and Veronica demands more from Flavia.

Four nuns are raped by a group of lepers. Although they all turn out to be pregnant, their status is hidden from them in the convent.

In a small western town, a father obliges a doctor to separate two conjoined twins in a very hazardous operation. One of the children dies but years after seems to have survived as his brother's second personality.

An engineer moves into a bungalow on the beach next to a widow and her two boys. The older boy has a bit of an Oedipal complex and seems to like his mom. Of course, that means that no other man can come and break up their "happy" family.

Irene is a young housewife and mother who tries to raise her young family, love her husband and keep her home all the while studying her masters' degree. Mario, her husband, is a good man, but he's tied by convention. When she has a strange mishap one day, her domestic life is catapulted in a whirl of horror and violence that will tear the fabric of her very existence apart.

The story runs in the 1940s Mexico City. A schoolboy (Carlos) falls in love with his best friend's mother (Mariana). Carlos is impressed because this family is not like the ordinary mexican families of the time, because they have many expensive American things, although they are not rich. The drama begins when Carlos gets out of school to go to declare his love to Mariana, and is discovered by his teachers.