Anjali Arakkal (Aparna Gopinath), a freelance journalist, while interacting with a retiring jail superintendent named Rama Moorthy (Nedumudi Venu) for ghostwriting his autobiography, meets C. K. Raghavan (Mammootty), a prisoner committed for double homicide serving 20 years even after his official term in jail. His preference and oddball comfortability piques Anjali's interest in Raghavan. Raghavan was tried for killing his wife (Ramani) and the daughter of his employer (Pooja Patel), yet he claims of his innocence every now and then.