Cold Wars charts a period of his career where he became drawn into increasingly high-risk climbs as Andy relives his 15-day winter ascent of the Dru in the Alps and the first winter ascent of the East face of Mermoz, Patagonia.  As his brother is drawn into the conflicts in Afghanistan and Iraq, Andy juggles family life with an almost compulsive obsession with climbing the most difficult and dangerous winter routes on the planet.