The content in episode 2 of the novel might involve further development of the main characters' relationships or new plot twists. But it really depends on the author's imagination and the overall story arc.
I'm sorry, but I'm not specifically familiar with a story named 'ek ishq ek junoon'. It could be a relatively niche or regional story. You might want to check local libraries, cultural centers or online forums dedicated to the relevant culture for the full story.
As I don't know the actual 'ek ishq ek junoon' story, I can't say for sure about the characters. But generally in a story with a title like this, there might be characters who are deeply in love. There could be a protagonist who is driven by their love (the 'ishq') and perhaps also by a strong passion or determination (the 'junoon').
It is indeed based on a real story. The creators of 'Sirf Ek Banda' took inspiration from actual incidents to shape the plot and characters, giving it a more authentic feel.