Geoffrey Jones, M.P. and sometime architect, is convinced that the Russians are about to launch a nuclear strike against England. He builds a bomb shelter equipped with everything he, his wife, and his wifes old mother will need to last out such a strike. They plan to try the thing out for a three week experiment when, inadvertently, they are trapped inside with the mother, the telephone installer and an Indian milkman. They try to make the best of...