Santos attempts to lead a people's revolt in Colombia to overthrow the Presidente. When his revolt fails and he is killed, his sister Christina goes to New York to find McBain, a lieutenant Santos rescued during the Vietnam War. McBain agrees to help, recruits his old war buddies, raises some cash by killing a few drug dealers, then leads an attack to topple the Colombian government.
An American military advisor becomes disillusioned by the brutality and corruption of the Central American government which hired him. When his shift in sympathies becomes known, he's arrested and tortured but soon escapes, along with a beautiful American woman, in order to join the rebels.
The story centres on one such nomadic tribe who it transpires are searching for new, uncontaminated females with whom to procreate. Big Lou is apparently second in command in this group and in addition to leading search parties for females his role also involves standing as the leaders champion during combative arena matches.
