O Lal Meree Pat Rakhio Bala Jhule Lalan from movie Dama Dam Mast Kalandar – Widower Rai Bahadur Pratap Singh lives a wealthy life-style with his son. He would like his son to marry some girl from a rich family, and is disappointed when he wants to marry someone poor. Pratap instructs him to forget about his love-life, his son refuses, and as a result Pratap asks him to leave the house. Years later, Pratap receives a letter in the mail, informing him that his son is dead, and that his widowed daughter-in-law and her son, Guddu, are on their way to live with him. He is delighted, and sends Prem, his nephew to receive, however, both mother and son do not arrive and are believed to be missing. Rai Bahadur subsequently finds out that his daughter-in-law is dead, and Guddu is living in a slum with a thief and drunk, Shankar. With the help of the courts and the police, Pratap manages to bring Guddu to his home. This is where Pratap will find out that money and power will not buy him his grandson’s love, he will also find out that his daughter-in-law did not die a normal death, but was killed. Watch what happens when Pratap starts to investigate who killed his daughter-in-law.