Billy Madison is the 27 year-old son of Bryan Madison, a very rich man who has made his living in the hotel industry. Billy stands to inherit his father’s empire but only if he can make it through all 12 grades, 2 weeks per grade, to prove that he has what it takes to run the family business.

A man living in rural Wisconsin takes care of his bed-ridden mother, who is very domineering and teaches him that all women are evil. After she dies he misses her, so a year later he digs her up and takes her home. He learns about taxidermy and begins robbing graves to get materials to patch her up, and inevitably begins looking for fresher sources of materials. Based closely on the true story of Ed Gein.