Mamsie catches Lulu making a mess of the kitchen, so she punishes Lulu. When Lulu asks, "How do you know that I made this mess?", the maid says sarcastically, "A little bird told me!" Angered that the bird outside her home snitched to the family's maid, Lulu goes after the bird with her slingshot.
A manufacturer and an impresario (who has promised some young people he will stage their show) are twin brothers causes a lot of confusion when the manufacturer is mistaken for his no-money brother.
Sgt. Rusty Curtis of the U.S. Cavalry is unhappy about the Army's plan to replace horses with tanks so, after a medical discharge, he tries to buy his old military mount Sireson.
Jimmy O'Brien (Robert Lowery)and Sammy Rubin (Sidney Miller), write jingle commercials for radio, and meet Mary Adams (Dona Drake), who wants to break into radio as a soloist for a band.
Having been falsely court marshaled for cowardice and sentenced to prison by the Army, Jed Kilton escapes and heads to Nevada Springs to see his kid brother.
The capture of Naples, the first great European city to be liberated, revealed the magnitude of the tasks involved in re-creating the means of livelihood and the machinery of government in a devastated, starving and disease-ridden city.
A young Eastern lawyer, seriously injured in a stage holdup, secures the help of Hoppy, California and Jimmy in completing his mission to his woman cousin's ranch in Texas.
With a plot line mostly lifted from 1941's "White Eagle", Columbia's 24th serial (following "The Desert Hawk-1944" and ahead of 1945's "Brenda Starr, Reporter"), "Black Arrow" finds carpet-baggers Jake Jackson and Buck Sherman arriving in Blue Mesa in search of gold.