Forty-year-old Norman Bates is a shy, overweight recluse who lives at home with his domineering mother; a mean-tempered, puritanical old woman who forbids him from having a life apart from her. Together they run the small Bates Motel in Fairvale, where business has suffered ever since the state relocated the highway. It’s the kind of place hardly anyone ever stops at anymore.

Enter Mary Crane, a beautiful young secretary who has impulsively stolen $40,000 from her boss, hoping her boyfriend can use it to pay off his debts so they can finally get married. As she flees town en route to her boyfriend Sam, Mary accidentally turns off of the main highway and finds herself at the Bates Motel where there are plenty of vacancies. Soon, Mary Crane will meet Norman. She will meet Mother, too. And she will grapple with the gravity of the crime she has committed as she comes to realize the cutting truth—that we all go a little mad sometimes.