During the closing days of WWII, a National Guard Infantry Company is assigned the task of setting up artillery observation posts in a strategic area. Lieutenant Costa knows that Cooney is in command only because of 'connections' he had made state-side. Costa has serious doubts concerning Cooneys' ability to lead the group. When Cooney sends Costa and his men out, and refuses to re-enforce them, Costa swears revenge.

Hap Smith, nightclub entertainer, has a new act since his former partner Chick Allen joined the army: with lovely new partner Betsy Carter, Hap plays a clownish parody of a soldier. Meanwhile, Chick is organizing a soldier show at Fort Benning and finds he needs his old partner's help. To get onto the base, Hap impersonates a hapless real soldier, Dogface Dolan; but circumstances force them to prolong the masquerade, creating an increasingly tangled Army-sized snafu.

Karen has to take a ride in Frank's car. He's travelling with his wife, on his way to sell computer chips, which he obtained illegally. He suspects his wife is being unfaithful and tragic things happen, following a discussion. Karen escapes, reaching a lab where a scientist has discovered how to go back in time, and she returns by accident some minutes before the violent events. Then she tries to make things better, but things tend to become worse, as time cycles keep being repeated.

Like many other Manhattan husbands, Richard Sherman sends his wife and son to the country for the summer, while he stays behind to toil. Though reveling in temporary bachelor freedom of lifestyle, he's resolved not to carouse and philander like some others. But his overactive, over-vivid imagination goes into overdrive when a delightfully unconventional, voluptuous blonde moves in upstairs.

It's a dreary Christmas 1944 for the American POWs in Stalag 17. For the men in Barracks 4, all Sergeants, they have to deal with another problem - there seems to be a security leak. The Germans always seem to be forewarned about escapes and in the most recent attempt the two men, Manfredi and Johnson, walked straight into a trap and were killed. For some in Barracks 4, especially the loud-mouthed Duke, the leaker is obvious: J.J. Sefton a wheeler-dealer who doesn't hesitate to trade with the guards and who has acquired goods and privileges that no other prisoner seems to have. Sefton denies giving the Germans any information and makes it quite clear that he has no intention of ever trying to escape. He plans to to ride out the war in what little comfort he can arrange, but it doesn't extend to spying for the Germans. As tensions mount and a mob mentality takes root, it becomes...