So far in A Clash of Kings Brandon Stark is the acting Lord of Winterfell while his brother Robb is commanding the Northern army's in the river lands. Mean while Tryon is hard at work forming Alliances with other houses to strengthen the crown and his house. Jon is north of the wall with 300 Men of the Nights Watch looking for the wilding army. Arya is currently being held captive by the Lannisters at Harrenhall. Also while all of this is happening Stannis is planning his siege of kings landing This is whats happening so far in A Clash of Kings.