My Friend, Oscar.

Kate Jones and Becky Finkelstein are manicurists who decide to go overseas and entertain American troops during the Great War. Clark Jackson, a wealthy playboy, and William, his valet, are members of the A.E.F, and William becomes the top-sergeant in their unit. Evelyn, a friend of Clark's, also goes to France as a Red Cross nurse. They all meet, and Kate and Becky both fall in love with Clark. Kate is jealous of Evelyn, but, unknown to any of them, Evelyn loves an American aviator. When the Armistice finally comes, two of them have died in the war, but the others are all reunited.

At a December 7, 1941 Washington cocktail party, Connie Mathew is not amused by the romantic advances of playboy Tommy Aldrich, son of an important Navy consultant. The party is shocked by the news of the Japanese attack on Pearl Harbor and Connie blithely announces she would like to serve Uncle Sam as a new version of Mata Hari. She finds Mr. Fortune waiting for her when she gets home and he introduces himself as a member of the Secret Service and asks her to join his staff. Thinking it is a practical joke by Tommy, she accepts. Fortune tells Connie her first assignment is to get friendly with Tommy, as the government suspects him of selling convoy information that he gets from his father to enemy agents. She does so, falls in love with him and finds out he is 100% loyal. Mr. Fortune takes Connie and Tommy captive. Connie's sister, Agatha, had earlier suspected Mr. Fortune and she was taken prisoner by his Axis spies.

When their father is reported missing at the front during World War I, Jane and Katherine are stamped and sent by parcel post across the country to their Aunt Lucille Forrest in New Jersey. The two girls manage to smuggle their dog into the mail bag as well. Aunt Lucille is in love with Lt. Tom Hayes, but she is angry with him after he resigns his commission at the start of the war. She does not know that Tom is in the Secret Service, and she becomes jealous of a female spy whom Tom is trailing. Jane and Katherine's mischievous pranks finally assist in capturing the spy and the secret plans, and getting Aunt Lucille back together with Tom.

In the final stages of WWII a group of allied scientists develop a giant, fire-breathing KAIJU to use against the axis powers.

August 1943. The Danish navy has a standing order not to let any ships fall into the hands of the Germans. When an alarm is sounded in the Baltic Sea, Lieutenant Gad and the rest of the crew on the minesweeper MS 1 have to make the difficult choice of whether to sink their ship or try a dangerous voyage to reach a safe harbor in Sweden.