 Police Inspector Ram Kumar Sinha entraps notorious gangster and arch-criminal, Balaram Prasad alias Ballu, arrests him and holds for a court appearance, only to find out that Ballu has escaped. Ram s superiors hold him responsible for this lapse, and suspend him. Ram s sweetheart, Ganga, who is employed as a prison guard, volunteers to go incognito to entrap Ballu and bring him to justice. She successfully infiltrates herself into Ballu s gang, and soon becomes one of his most trusted aides. Ballu s starts falling in love with Ganga. And then all hell breaks lose when Ballu comes across Ganga s Identification Card.