Having eluded a Japanese trap in the rolling hills of Java, Jungle Jim and his stalwart group of United Nations guerrilla experts are contriving a trap of their own. Guided by the Dutch underground leader, they arrive at an inland valley. This valley is dotted with important rubber plantations, all of which are in the greedy hands of the Japanese usurpers. Knowing the value of the stolen rubber to the enemy, Jim is determined to stop its production...