Farmer Mårten Esbjörnsson has three adult sons who all want to find a wife to marry. However, all the young women of the neighborhood seem to be less than perfect.
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.
When Bigshot Jones gives his unnamed dog to the All-For-One Club, Buckwheat quickly names the canine "Smallpox", inadvertently causing a city-wide panic.
Celebrated elderly Austrian poet opposes nazism, while his daughter admires and falls in love with leading nazi activist, who eventually becomes concentration camp commander with his father-in-law as prisoner.
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.