Legionnaire Bill Reilly was given specific orders to guard a railroad station where nightly trains carrying Spanish supplies and troops pass by. He would have done so had it not been for a severed hand that arrived in his camp. The grizzled token carried a taunting message from a renegade Berber chieftain, claiming capture of an Englishwoman named Kay MacArthur and challenging the Legion to rescue her. Reilly's sense of honor overrides all. He takes up the gauntlet knowing full well he could be walking into a trap—with deadly consequences.