This is the only DLC worth getting really. All the others add maps which is fine if you like to play around in Skirmish mode, but if you enjoy the voice acting as the core part of the game then those maps will be useless to you. As you can guess simply from the name there are many Game of Thrones references, including the alliance stronghold being named "Kings Landing" and that the evil undead horde is behind the giant ice wall that you'll need to destroy, but it's fun regardless and as always, it's got that narrator again poking fun at you and the enemy.