Junior G-Men of the Air plot
"All-New Air Thrills!"
During World War II, a befriended group of youngsters consisting of Billy "Ace" Holden, "Bouten" Larson, "Stick" Munsey and "Greaseball" Plunkett work at an airplane-cum-automotive repair shop owned by Ace's father. One day, their service car is stolen by members of a Japanese spy gang called the "Order of the Black Dragon." But when the government official Don Ames manages to recover this car and returns it to the suspicious Ace, he refuses to give Ames a description of the men who stole the car. Ames decides to seek support from the four youths who work at Ace by having them do the detective work for him.