Ryan and Colin Pyle leave their moon-scape camping ground at Turpan and head across the salt flats to Xinjiang, China's Wild West. In a few hours they travel from 150m below sea level to 3300m above sea level in freezing temperatures. In the ancient Muslim city of Kashgar, they celebrate the end of Ramadan before venturing into the far western borderlands riding on the Karakoram Highway, the world's highest border crossing at 5200m above sea level, towards the border of China and Pakistan. However, at this point disaster strikes when Ryan takes a serious fall.