Roy Scheider leads a group of four fugitives who will earn their freedom if they can successfully transport truckloads of volatile nitroglycerine over treacherous terrain to extinguish a raging oil fire. The unstable explosives could prove deadly at any point of the journey, and numerous obstacles threaten the completion of the mission. Produced under rugged conditions in the jungles of the Dominican Republic, the film is visually impressive and contains intense moments of astonishing suspense.