A raging forest fire blazes out of control, heading straight for a state park conducting their final tour before they are forced to shut down. Forest Ranger Thomas Rain races back to the park to rescue his estranged love, tour guide Ellie McCormick and her group of tourists, from the advance of the newly energized flames. Once there, he dicovers they are being held captive by a group of murderous thieves, led by Roger Porter, who are there to claim a fortune in gold, hidden in the underground river that flows through the park. With the hellish inferno closing in, Rain must find a way to save them all, and keep the gold away from the bad guys.