Uyir revolves around Ajeeb's life (Roshan Mathew), an Officer on Probation stationed in a small town in Kerala that shares its border with Karnataka. During his tenure he tumbles upon a case which changes his life further head. Asst. Sub-Inspector Joy (Baiju Santhosh) assists him in uncovering the Truth. Whether the complexities of the case will affect Ajeeb and whether he will be able to unearth the mystery surrounding it form the crux of the Movie.