Brace yourself for non stop action and suspense! When an explosion seals off a commuter tunnel 100 feet below the Hudson River, the survivors are faced with toxic fumes, fires and the impending collapse of the tunnel. Their only hope lies in the hands of former emergency medical services chief Kit Latura (Sylvester Stallone). As the walls cave in and the tunnel fills up with water, Latura risks his own life to save others and prevent the disaster from escalating into an even greater catastrophe.