In the year 2037, an international sport has been established, wherein a driver of a truck must cross the country and arrive at a designated terminus, while confronting obstacles and enemies along the way. The lead truck, named "Monster", has been designed by a boy genius (Gabriel Damon) and is to be piloted through the course by a woman named Gus (Karen Allen). Eventually, the truck's AI fails and Gus ends up in uncharted territories. There, she encounters leather-clad "hoods" (hoodlums) that torture her and eventually kill her. Prior to dying, she befriends a fellow prisoner (Johnny Hallyday), who later uses the truck to rescue himself and a young orphan. Meanwhile, the boy genius watches them by an artificial satellite so that he may see how well the truck's software works. The conclusion reveals that as he watches the truck, he is himself watched and evaluated by the sinister doctor (Jürgen Prochnow) who cloned him.
Johnny Hallyday as Stump (Manchot)
Karen Allen as Gus
Jürgen Prochnow as Doctor/Sir/the hostile truck driver