Hugh O'Brian, Mickey Rooney and James Mitchum star in this World War II nail-biter. With time running out, a detachment of Marines plows through the Philippine jungle to find a Japanese-American girl who holds vital data about Gen. Douglas MacArthur's imminent invasion. In the process, the soldiers turn up a plot to destroy the U.S. fleet using underwater mines. Without a means of communication, can the doughboys find a way to foil the attack?