What is Duniya about?
Mohan Kumar's diligence and honesty lands him in trouble with Balwant Singh Kalra, Jugal Kishore Ahuja, and Mr. Bhandari. Together the trio frame and imprison Mohan and make him watch helplessly as his wife is killed. Years later, Mohan Kumar is released from prison, his only goal in life is to avenge his humiliation and wrongful arrest at the hands of the trio. With the help of Dinesh Verma, he establishes himself again, and starts the process of bringing death and destruction to the trio. The trio are well aware of his presence, and decide to send one of their men, Ravi, to spy on him. Ravi falls in love with Verma's daughter, Roma, and decides to change sides to help Verma and Mohan, but Mohan will not have anything to do with Ravi, and asks him to leave. Ravi then becomes a target by the trio and their men, and has to save himself, and the only way he can redeem himself is by turning the tables over Mohan, who is none other than his own father.