The movie "Psycho" revolves around a psychiatrist, Dr. Abraham (played by Mohanlal), who runs a clinic in Idukki. He takes on a new patient, a young woman named Maya (played by Meena), who suffers from a rare psychological disorder. As the story unfolds, it becomes clear that Maya's condition is linked to a traumatic event from her past. Dr. Abraham becomes increasingly obsessed with understanding and treating Maya, but his methods are unorthodox and raise questions about the ethics of psychiatric treatment.