Once upon a time, there was a writer.
No: it wasn’t Dharmendra, and it certainly wasn’t Nanda (old Hindi cinema, at least, doesn’t seem to believe women capable of writing anything more complex than a love letter, if that).
This writer was someone quite different, and one day (I’m guessing) decided that it was time to show the world what he was capable of. So, with a producer and a director, the writer went into action, and what resulted was Akashdeep. Looking at the film, I’m assuming this was somewhat of a collaborative effort. A “how about this?” and a “don’t you think it would be a good idea—?” sort of film.