The film starts off with an introduction of Joint Director Ashwin Kumar at the annual function of India’s premier police investigating agency, the Central Department of Investigation (CDI). At the function (1 April 2008), his senior officers hand him over a double murder case. The film then goes into a flashback of events leading to the murders. On the night of 15-16 March 2008, Shruti Tandon (Ayesha Parveen), a 14-year girl is found dead at her home in Sameer Vihar of Noida, by her parents Ramesh (Neeraj Kabi) and Nutan (Konkona Sen Sharma).