Dr. Alan Stone, [Richard Gere], a progressive psychologist who left New York University in 1954 to work directly with patients at the Ypsilanti State Mental Asylum, becomes a central figure in a tense era for mental health care. Stone specializes in schizophrenic patients and is widely seen as a critic of the system, which in the 1950s relied heavily on institutionalization and sedation. Insulin shock therapy and electric shocks were common tools, while true talk therapy remained a marginal practice.
At Ypsilanti, Stone encounters two patients who each believe they are Jesus Christ: the intellectually sharp Joseph Cassell [Peter Dinklage] and the rough, emotionally scarred Clyde Benson [Bradley Whitford]. From this odd convergence, Stone designs a new format of group talk therapy aimed at better understanding their minds. He then brings in a third patient, Leon Gabor [Walton Goggins], who also claims Christ-like status, to observe how such beliefs play out in a shared setting. Stone quickly learns that their troubles are not the same in origin or expression: Gabor’s struggles stem from a deeply religious mother and a past marked by trauma during service; Benson is haunted by the death of his wife following an abortion; Cassell is prone to sudden, violent anger. The institutional routine had previously relied on electrical sedation for Cassell, which contributed to his fear of losing his sanity.
Stone’s approach challenges conventional methods and draws skepticism, even from the head of the asylum, Dr. Orbus [Kevin Pollak]. Rather than resort to punishment, Stone seeks to connect through conversation and letter-writing, hoping to reach the patients on a human level. His method gains recognition when a professional journal features his ideas on the cover, fueling Orbus’s envy and his desire to share in the prestige and in the treatment itself. As Stone remains cautious and principled, Orbus sidesteps him, arranging a private interview with Cassell. It is revealed that Stone authored Cassell’s letters to Orbus on Orbus’s behalf after the latter originally refused the task. Cassell feels betrayed and becomes wary that his chances of leaving the clinic are fading. Although he behaves well for a time, the old pattern resurges, and Orbus orders renewed electric shocks. Stone rushes to intervene, but the damage is done; a confrontation with another doctor leaves Stone injured and leads to his expulsion from the institution.
With Stone removed, Orbus assumes control over his former patients, including Cassell. Cassell, recognizing Stone’s sacrifice and sensing his own dwindling prospects, turns away from Orbus and clings to a vision of enduring suffering. The tension culminates in a conversation in the chapel’s bell tower, where Cassell, feeling betrayed and cornered, ends his life. In the subsequent hearing, Stone accuses Orbus of harmful, negligent decisions. He also interprets Cassell’s last words as a rebuke of Orbus’s sins, echoing the idea of Jesus bearing mankind’s wrongs. The hearing ends with Stone being fired, yet he is granted permission and funds to continue his study, including the two remaining patients in New York. Orbus, meanwhile, remains formally in his post but deprived of real decision-making power until retirement. The film closes with a stark, almost ceremonial image: Stone sits in Cassell’s seat and plays cards with the two Jesuses, a quiet, enduring reminder of what the therapy sought to achieve, even if the method proved uncertain and controversial.