In a New York bar, a number of people watch the TV (and drink of course) but the news is bad. There are rumours of Soviet threats to America. One owns a tractor factory but doesn't want to change it to make tanks, the others are fairly blasé about the fight against godless Communism. But then the nightmare does happen after all, the Soviets attack Alaska and soon the nukes are flying. By now the bar patrons are in various parts of the country caught up in the Third World War...
This isn't a good film by any means, it uses a mountain of stock footage (much of it from WW2 though as the film was in the early 1950s it isn't too out of date), any live footage of fighting often usefully includes Soviet soldiers disguised as American troops (easier to get the uniforms). It's propaganda is laid on thick though, don't be denying the military industrial complex proper funding as otherwise you'll have Soviet paratroopers landing in the local park!