Eleanor Lightbody (Bridget Fonda) and her husband Will (Matthew Broderick) travel to the Battle Creek Sanitarium for the cure. On the train, they meet Charlie Ossining (John Cusak) who hopes to make his fortune in the booming breakfast food industry. The san is run on strict rules of vegetarianism and sexual abstinence by John Harvey Kellogg (Anthony Hopkins), inventor of the corn flake. Regular enemas, exercises, outings and baths are prescribed, but Will repeatedly breaks the rules and is lured into liaisons with a chlorotic fellow patient and his nurse.
Eventually, he and Eleanor turn to other unconventional treatments, which are not sanctioned by Kellogg, including nudism and sexual stimulation. Meanwhile Charlie joins up with George Kellogg (Dana Carvey), the Doctor's adopted but estranged son, who taunts his father when he is not extorting money from him. George sets the san on fire, but is reconciled with Kellogg during the conflagration when he sobs "Daddy give us a cuddle." The Lightbodys go home to a moderate pursuit of health.
