Original sentence: Three predominant stories interweave:  a dynastic war among several families for control of Westeros; the rising threat of the dormant cold supernatural Others dwelling beyond an immense wall of ice on Westeros' northern border; and the ambition of Daenerys Targaryen, the exiled daughter of a king murdered in a civil war shortly before her birth, to return to Westeros with her fire-breathing dragons and take the iron throne which she believes to be hers by right
Edited sentence: Three predominant stories interweave:  a dynastic war among several families for control of Westeros; the rising threat of the dormant cold supernatural Others dwelling beyond an immense wall of ice on Westeros' northern border; and the ambition of Daenerys Targaryen, the exiled daughter of a king murdered in a civil war shortly before her birth, to return to Westeros with her fire-breathing dragons and take the iron throne which is apparently hers by 'right'