Since this is based on Jeffry Archer's novel Kane and Able, it will be more on the the way kabir and Aditya's lives always meet at different times in life and how their dushmani grows. If it is the same story the differences between the two will go on till practically the end of their days. Lets see as the story unfolds only will we be able to say anything....but so far as my memory holds good it is definitely going according to the novel, but is adapted to the Indian background.