A Game Of Thrones - By George R. R. Martin
The story is set in the medieval ages in the fictional continents Westeros and Essos, and told through multiple perspectives in each chapter. One of the perspectives is of the Stark family who are the main family of House Stark, located in the fort Winterfell, the lord Ed Stark is called to be the Kings Hand as the previous one had been slain, which is basically the bodyguard of the king. A member of the Stark family, Jon Snow is taken to a place called the wall, which is a big wall made of ice where they keep all the people that commit minor crimes. The wall is the only place that separates them from the north, where it is infested with dangerous undead beings called white walkers. In Essos which is the continent split from Westeros by the Narrow Sea, a woman called Daenerys, part of House Targaryen, is sold off to a leader of the Dothraki, called Khal Drogo by her brother Viserys in-exchange for some men for his army. The story snowballs from there and it gets very intense. You'll have to read the rest of the series to figure out what happens.