A Knight of the Seven Kingdoms: first trailer for new Game of Thrones prequel

Latest Westeros-set show, based on novellas by George RR Martin, takes place 100 years before events of Game of Thrones

HBO is headed back to Westeros once again. The network revealed the first trailer for its second Game of Thrones prequel, A Knight of the Seven Kingdoms, at New York's Comic Con on Thursday, revealing the Targaryen colors, jousting and plenty of chainmail.

According to the logline, the series, based on a series of novellas by the Game of Thrones author George RR Martin, will follow two unlikely heroes" who wandered Westeros: a young, naive but courageous knight" named Ser Duncan Dunk" the Tall, played by Peter Claffey, and his diminutive squire" Egg, played by Dexter Sol Ansell.