Rakesh from Furstaganj; and Vimmi from Pankhipur; hail from small towns but dream big.... Rakesh , son of a ticket-checker , dreams of building a big business of his own . Vimmi , a seemingly simple homely girl , in fact aspires of making it big in the fashion world . When the small-town sensibilities around them threaten to nip their aspirations in the bud , they leave their respective homes for Mumbai - the city of opportunity . Their paths collide , and their identical backgrounds and similar nature of their dreams draws them close . They form a conning duo with "Bunty" and "Babli" being their respective aliases . In the beginning they con people for money and later just for fun . They fall in love , get married , and resort to a lifetime of conmanship . However , ACP Dashrath Singh is hot on their trail and has sworn to nab them .

Hrithik Roshan was approached for the role of Bunty. However, recalling the disastrous Mujhse Dosti Karoge! (2002), he put a condition that he would do the film if it was directed by either Yash Chopra or Aditya Chopra. Abhishek Bachchan was approached next and he accepted the role.

DCP Dashrath Singh:
Tell me joke.... Non-veg.

Sung by Udit Narayan, Sunidhi Chauhan and Nihira Joshi
Composed by Shankar Mahadevan, Ehsaan Noorani and Loy Mendonsa
Lyrics by Gulzar (as Sampooran Singh Gulzar)