A Miami cop learns that her father, who was the sheriff of her small hometown, has been murdered by an armed gang that has taken over the town. She brings four of her Miami cop friends to help clean out the town.

During the Vietnam war, the American army forms a special unit called "tunnel rats" to go down into the elaborate system of underground tunnels constructed by the Vietcong, kill anyone they find in it and destroy the system.

A Special Forces unit is sent to Cambodia on a rescue mission.

The oppressive reign of President Mendoza causes people of Costa Brava to rebel.

Texas Ranger Daniel Custer leaves for Vietnam to find his brother Michael, a Green Beret Lieutenant who has been reported missing in action. Michael's squad was searching for a mysterious group of 'phantom soldiers' that had been using US-made arms for massacring villages and killing unarmed civilians. Daniel goes out on his own into the jungles of Vietnam to find his brother and stop these killers.