The Bhishma in ''The Mahabharata'

I just read through 'The Mahabharata' and i found the similarities between Bhishma and the maiden in 'The Son of The Turtle-Spirit'. They both are witty enough to help their beloved ones to achieve their dreams. Instead, Bhishma is a noble person that he is willing to give up the throne for his father's happiness. Besides, he even swears to have no sons just to help his father to marry another girl. Nevertheless, the story I read is just a part of the whole complete story of ''The Mahabhrata'. So, I believe that the story will not end in this simple way. There will sure be some conflicts happen in the later parts of the story. This story is indeed inspiring and exciting. I'm looking forward to the class when our lecturer, Dr. Edwin, discusses about it.