Maqbool movie revolves around the chraracter Maqbool (Irfan Khan) is an orphan who was adopted by Abba Ji (Pankaj Kapoor), a powerful underworld don. Jahangir Khan/Abbaji (Pankaj Kapoor) is the aging leader of a criminal gang. Nimmi (Tabu) is his mistress. Members of the gang include Maqbool (Irfan Khan), Kaka (Piyush Mishra) and his son Guddu (Ajay Gehi), and 2 cops Pandit and Purohit (Puri and Shah respectively).
Maqbool and Nimmi love each other, but since Maqbool will not defy Abbaji openly, their affair is kept secret. Nimmi wishes to leave Abbaji and live with Maqbool, but realizes the futility of it while Abbaji is alive. So, she slowly but surely begins to put ideas in Maqbool's head .