Leading a team of 36 commandos, Captain Charles Nelson (Errol Flynn) parachutes into Japanese-occupied Burma in hopes of destroying a critical radar base. The mission is a success, but when the group reaches the air strip where they expect to find planes ready to fly them to safety, they instead find a waiting Japanese army. With no choice but to attempt an escape on foot, Nelson splits his team in two and reluctantly heads into an impenetrable jungle.