This action film is set in Asia during World War II and follows the exploits of a truck driver who must investigate the mysterious death of his younger brother. The trucker had been driving in convoys along the dangerous Burma Road between Rangoon and Chungking for a long time when he decided it was time to return to the U.S. and become an auto mechanic. Unfortunately, he is delayed by his younger brother who arrives in the country. Apparently he is mixed up in some kind of international intrigue and gets killed. The older brother eventually discovers a ring of Eurasian hijackers conspiring to thwart the convoys that deliver vital supplies.