A pilot's worst nightmare - buried underground with no guarantee of ever seeing the open sky again. Gen. Savage and a group of Londoners are trapped in a cellar during an air raid, while the only man who knows they are there is wounded and incoherent. Savage has to deal with an elderly widow facing true fear for the first time, a young coal miner with a phobia about being buried alive, a charlatan confronted by the lies behind his life, and a girl about to become an unwed mother. Oh, and there is one other occupant of this hell under earth - an unexploded, ticking time bomb.