A descent into Hell is triggered when "Ex-Lord" Donald Brocklebank finds that he must leave Longleigh House for London to find a way to pay for the medical treatments for his wife Nancy. Alone, his over-protected, delusional, adult son, James, fancies himself in charge of the manor house with his terminally ill mother, and barricades the two of them into the house for a series of ever more panicked home treatments, mistakenly protecting her from the arrival of Nurse Mary and any outside help.

When Sara, a young design student from Iowa, arrives for college in Los Angeles, she is eager to fit in and get to know the big city. Her wealthy roommate, Rebecca, is more than eager to take Sara under her wing and show her the ropes. The two become close, but when Sara begins to branch out and make more friends on campus, Rebecca becomes resentful. Alarmed, Sara moves in with her new boyfriend, causing Rebecca's behavior to take a violent turn.