Mr. Wise Guy

A group of delinquents on their way to summer camp get stuck in a haunted house.

Street kids get sent to the country, where they get mixed up in murder and a haunted house.

A group of young men who work at an aviation factory begin to suspect that a doctor who runs an air ambulance service is secretly a spy transporting secret information from the plant to enemy agents.

A street kid has dreams of becoming a jockey. He gets his chance when he and his gang discover a poor old man who has a championship race horse. The man agrees to let the boy ride his horse in a race, but first the gang must get enough money to pay for the race's entry fees.

The East Side Kids try to fix up a house for newlyweds, but find the place next door "haunted" by mysterious men.

Danny helps to capture a wanted criminal and receives a $200 reward. However, he has a falling out with the gang when they believe he should share the money with them. Complications ensue when the crook that Danny helped capture escapes from jail and comes looking for him.

Muggs and Glimpy, two East Side Kids in the army, return to their neighborhood, supposedly on furlough; actually, Muggs has been honorably discharged with a physical defect, but he tells no one of this. Danny, another East Side kid, is in jail because a large amount of medical supplies have been stolen from the warehouse where he works. Muggs see Spider, a new member of the gang, flashing a large amount of money around, and Muggs shrewdly turns toughie, boasting that he has a dishonorable discharge because of thievery. This leads Spider to confide in Muggs that he is the one who has been aiding in the theft of supplies from the warehouse, and he gets paid for the loot by Larry, operator of a nightclub where Muggs' sister, Milly, is an entertainer. Fingers, a henchman for Larry, kills Spider when he learns that Muggs has been let in on the operation. The police then suspect Muggs of killing Spider.

Ordered by a judge to get a job, Muggs McGinnis is hired by wealthy Mrs. Murray, who has a penchant for picking up trouble-prone servants. At an engagement party for Mrs. Murray's spoiled daughter Brenda, Muggs enlists his pals as extra help.

Muggs, Glimpy and the rest of the Kids set about to Americanize affable young French refugee Jean Rogers. But after a disastrous baseball game, Jean is chased out of the neighborhood and told not to return.

Copy boys Muggs and Glimpy investigate a murder. They locate the ex-wife of the murdered man and become convinced she is innocent. They hide her from the police while they investigate.

The police commissioner asks some local street kids to toughen up his ballet-loving son.