Ned Stark, Lord of Winterfell, becomes the Hand of the King after the former one, Jon Arryn, has passed away. But before Ned goes to the capital, Kings Landing, a letter arrives from his wifes sister Lysa, who was the wife of Jon Arryn. There it says that her husband was murdered, and it is up to Ned to find out whats going on. But that isnt everything. The White Walkers has been seen, and they seems to go down south.