When gangster Jimmy Donovan is made guardian of Midge, the 7-year-old brother of his friend Big Ben Murray, he decides to reform and rear Midge properly. The court takes custody of Midge, but Donovan proves himself by recovering a payroll stolen by some of his ex-colleagues, thereby winning Midge and Kitty, his girl.
Andrew Sheldon is so busy perfecting a new explosive for the United States effort in World War I that he fails to realize that his butler, cook, housekeeper and chauffeur are all German spies. His two mischievous daughters, Jane and Katherine, however, make life difficult for the spies by throwing pies at the Kaiser's picture and clipping the butler's long, Prussian-style mustache while he sleeps. When Andrew's wife announces that she is pregnant, he tells the girls that he has written a letter requesting a baby brother for them, whereupon they decide to steal the letter, convinced that two children are enough for their family. Breaking into Andrew's laboratory, they take the "letter," actually the secret formula, but after Andrew reveals that his plans are missing, the butler enters the laboratory and seizes the invention itself.
Carlyle Blackwell stars as an American in Germany at the outbreak of World War I. A mysterious stranger bursts into his room and proclaims him her husband. What's a gentleman to do? He poses as her husband to deliver "papers" to French headquarters. Adventure follows.
After running away from an orphanage, young Alicia Jones disguises herself as a boy and gets a job on a farm. She falls in love with Harry Deigan, a farmhand who knows her secret, but when the farm's owner finds out, he fires her. Alicia is forced to return to the city, where she meets up with a wealthy man who adopts her. He turns out to be Thomas Deigan, the half-brother of Alice's love Harry Deigan. Harry finds out that Thomas is his half-brother, but also finds out something that could change his, Thomas' and Alicia's lives forever.
Steve Monteith and Ezra Mason, upper class men, and Bill Bronson, a plebe, are chums and roommates at West Point before the Civil War. Steve prepares to leave for his home in Virginia, and Mason and he exchange photographs before parting. General Abner Montieth, Steve's father, and his sister Clairette are overjoyed and surprised when Steve arrives. Aunt Margie and her adopted daughter, Joan Fitzhugh, who is very fond of Steve, join the family and give Steve a warm welcome. One year later the rumble of war is heard. Steve, now a major, and his father, General, leave at the head of separate companies with the Confederate troops.