I think he is son of Rudra's past boss who used to be big buisness man cum don and was friend of DSp. police was behind him so he took asylam to DSP's house assuming police cannot doubt police and he will be safe,but he told whole story to his dsp friend and told him to protect him,as his wife was pragnant at that time.DSP has given him asylum but he had planned his arrest behind his back,in a way he betrayed his trust in him.police arrasted him he went in to jail his wife died and Arjun has gone to orphnage as no one was there to look after him.now his father will return and will seek revange on alluwalia ,so Arjun will becaome shatterd between love and revange,in the end love will vin.