Mithun Chakraborty drives an auto to take care of his younger brother Manish's education and turns into a masked looter in the night. Manik Bedi is an honest cop in the day but corrupt by night to arrange marriage of his sister Amita Nangia off. How both Mithun and Manik, turn from sabse bada be-imaan to sabse bada imaandar is the Climax