A young movie star and his friends, cruising around in his flying car, witness a blinding flash of light on the horizon over a metropolitan city. Then a mushroom cloud. When the dust cloud disperses they fly towards where the metropolis once stood, but there are no survivors in the aftermath. Amongst the ruins all they find is a hologram, programmed to be a fat, talkative plumber, intent on mending leaking pipes, completely oblivious that it is standing at ground zero of a nuclear strike.