The story revolves around Ayyankali (played by Biju Menon), a notorious don who rules the underworld of a small town. His life takes an unexpected turn when a young man named Ullas (played by Sajin Raaghavan) from the city arrives in town. Ullas is on the run from a local gang and is seeking refuge. Ayyankali, seeing an opportunity, offers Ullas shelter but with a condition: he has to pose as Ayyankali's lookalike and pretend to be the don.
As Ullas gets deeper into Ayyankali's world, chaos ensues. The film takes the audience on a rollercoaster ride filled with comedy, action, and suspense. The interactions between Ayyankali and Ullas, along with other characters, create a series of hilarious and sometimes tense situations.
Njandukalude Nattil Oridavela explores themes of identity, power dynamics, and the complexities of human relationships. The film uses dark humor to critique societal norms and the underworld's romanticization.