Years after his father disowns his adopted brother for marrying a woman of lower social standing, a young man goes on a mission to reunite his family.

Rajan Mathur (Anil Kapoor) is a Professor in Urdu literature in Dr. Zakir Hussain's College. He resides in Chandni Chowk with his activist wife, Roma Mathur (Shefali Shah). Professor Mathur comes across a young boy called Numair Qazi (Anurag Sinha) who introduces himself as a victim of communal riots in Gujarat.

Sonia and Rohit love each other but Rohit is mysteriously killed. When Sonia moves to New Zealand, she meets Raj, Rohit's lookalike who helps her trace Rohit's killer.

A gang of bikers headed by the cool-headed and arrogant Kabir is on a robbing spree in Mumbai. ACP Jai Dixit is put in charge of the case and he recruits a bumbling bike mechanic and racer to help Jai nab them.

Radha is a resolute mother, who strives hard against poverty and a lecherous money lender to feed her two sons who grew up with contrasting temperament.