Munnariyippu is a Malayalam Thriller film written by Unni and directed by cinematographer Venu. The mind game sets in with Anjali Arackal (Aparna Gopinath), a ghost writer who is assigned to compose an autobiography on jail superintendent, during which she encounters an intriguing prisoner C.K Raghavan (Mammootty) who is serving a long sentence for a double homicide, continues to remain in solitude. Interested in Raghavan's literary writing's inside the jail, Anjali decides to do an exclusive story based on the literary works of Raghavan. Will Raghavan be able to live up to her expectations, which will unveil what he was, or not forms the crux of the story?