While blood ties are often said to be the cause of conflict, in families where incest persists, obsession with relatives becomes commonplace, and some parents even teach their children that sexual acts for procreation are perfectly natural. The behavior of people raised in such environments appears to transcend common sense. Where do their values and morals truly lie? This shocking portrayal of a family's madness is so intense it risks driving viewers to lose their sanity, shaking them with both terror and fascination.