A hard-bitten Texas Ranger joins forces with a convict and a gambler in a covert operation to run a gang of gunmen out of the territory for supplying Comanche warriors with arms and alcohol from a secret hideout in Mexico. After infiltrating the renegades' secret camp, the heroes have to figure out how to survive until help arrives. Western, with John Wayne, Stuart Whitman, Ina Balin, Nehemiah Persoff and Lee Marvin