From what I saw todya I can guess that Kunals father was murdered. Dadaji says that he already lost his son coz of this money and that he doesn't want to lose his grandson now. Something is going on and it's big.
ALso abt the will change that KK was talking abt it was the one when dadaji sed the Kunal has to get married in one month.
What do you think Dadaji will do?
I think he will change the will and say that if anything happens to Kunal then the money will go to charity.