When an explosion traps a group of commuters, including outdoorsman Roy Nord (Viggo Mortensen), in a tunnel 72 feet beneath the Hudson River, former medical services chief Kit Latura (Sylvester Stallone) races to save the trapped survivors before they drown in the flooding passageway. In a thrilling tale that earned an Oscar nod for its effects, Latura traverses the maze of the tunnel's exhaust fans, pulling out all the stops.