Cookie is a psychological thriller about a psychiatrist couple named Dr. Aparna and Dr. Rajeev Kapoor who has a grown-up daughter by the name of Cookie. The couple has been so tied up in their profession treating patients coming to them with their disorders that they neglect their own daughter Cookie who grows up to be a violent and rebellious teenager. Circumstances lead Cookie to end her life while leaving her parents destroyed. Cookie returns back to release all of her anger and seek vengeance.