Background One Flew over the Cuckoo's Nest is a 1975 drama film directed by Milos Forman and based on the 1962 novel One Flew over the Cuckoo's Nest by Ken Kesey. The inspiration for One Flew over the Cuckoo's Nest came while working on the night shift at the Menlo Park Veterans' Hospital. There, Kesey often spent time talking to the patients, sometimes under the influence of the hallucinogenic drugs with which he had volunteered to experiment. Kesey did not believe that these patients were insane, but rather that society had pushed them out because they did not fit the conventional ideas of how people were supposed to act and behave.The novel was published in 1962, and in 1975, Milos Forman directed a screen adaptation, which won the "Big Five" Academy Awards: Best Picture, Best Actor (Jack Nicholson), Best Actress (Louise Fletcher), Best Director (Forman) and Best Adapted Screenplay (Lawrence Hauben, Bo Goldman).
The plot is set in Oredon mental hospital.Nurse Ratched is the head administrative nurse in the mental hospital, where she exercises absolute power over the patients' access to medications and basic necessities such as food and cigarette. She revokes these privileges whenever a patient displeases her.When McMurphy arrives at the hospital, however, her dictatorial rule is nearly challenged. She attempts to subjugate him-- at first with threats and punishments, then with shock therapy,but these are unsuccessful.In the end, Ratched's threat frightens Billy into committing suicide.McMurphy is outraged and attacks Ratched, and nearly kills her.Later,the Nurse turns him into a vegetable. Unwilling to allow McMurphy to live in such a state,another patient in the hospital Chief,smothers McMurphy to death with his pillow. He then carries out McMurphy's escape plan by lifting the hydrotherapy console off the floor and breaking the window and running off into the distance.