In post-war Berlin, British Major Haven (Richard Wattis) recruits members of a returning German bomb disposal unit, Hans Globke (James Goodwin), Peter Tillig (Dave Willock), Wolfgang Sulke (Wesley Addy), Franz Loeffler (Robert Cornthwaite), Karl Wirtz (Chandler) and Eric Koertner (Palance), to defuse Unexploded ordnance Allies of World War II bombs scattered throughout the city.