A bubbling volcano threatens to erupt, with the fate of a small town in the path of its potentially devastating fury. But when the town's mayor refuses to listen to the advice of world-renowned "volcanologist" Russel Walker (Chris William Martin), who's been studying the steaming crag, it becomes clear the town's inhabitants are at risk. Working alone, Walker rushes to get as many of them to safety as he can before it's too late to escape.