Ariyappedatha Rahasyam

With the menace of a counterfeiting racket operating in Kerala on the rise, CID Inspector Nazir is tasked to bring the perpetrators to justice.

When Vikraman returns home after completing his studies, he finds out that his brother has illegally acquired all the property leaving his widowed sister in poverty and decides to set things right.

Parinamam tackles the age-old issue of loneliness and redundancy among the aged. In parallel, Balakrishna Marar faces callous treatment from his family after his retirement.

After one of their elite officers Chandran (Raghavan) is brutally murdered, the CID force sends in their most elite officer Nazir (Prem Nazir) to investigate. He is in the crosshairs of a dangerous crime syndicate; but with the help of his trusted associate officer (Adoor Bhasi) the CID manages to tackle each obstacle thrown at them.