American forces drive onwards, almost oblivious to the emerging Communist Chinese threat. At Unsan, an American regiment finds itself at the mercy of two Chinese divisions, who bear down on it from three sides. Getting out before being overrun will be no easy feat.

Eighth Army commander Walton Walker makes his final preparations for the big push north to the Yalu River. The Communist Chinese prepare their own forces and wait for the Americans to make their move. At the same time, the freezing Korean winter arrives in force, plunging temperatures well below freezing. The Americans must get this done, and soon.