Hard-charging race car driver "Walkaway" Madden, nicknamed so for his history of walking away from car crashes, just wants to win the big Manilla 1000 off-road race. Photojournalist C.C. Wainwright intends to ride with him in that race. But Walkaway just wants to get rid of her. Fast-talking promoter Bo Cochran wants the race completed by any means necessary.

At the height of the Vietnam war, Captain Benjamin Willard is sent on a dangerous mission that, officially, "does not exist, nor will it ever exist." His goal is to locate - and eliminate - a mysterious Green Beret Colonel named Walter Kurtz, who has been leading his personal army on illegal guerrilla missions into enemy territory.