Army engineeer Richard Arlen helps blaze the trail for a crucial highway in the Alaskan wastes. His younger brother William Henry works side by side with Arlen, though Henry is hampered by a tendency to down tools and raise fists whenever someone calls him out. Arlen is willing to bail Henry out of trouble, but less willing to share the attentions of pretty Jean Parker. The Pine-Thomas unit at Paramount really had only one plot (two guys and one gal battling the elements), but Alaska Highway, like all of the unit's other 1940s efforts, brought home the bacon at the box-office. And as in most of the other Pine-Thomas escapades, burly Ralph Sanford is around for good-natured comedy relief. Whether by accident or design, many of the production personnel of this 66-minute actioner are alumni of the Hal Roach Studio: coscripter Lewis R. Foster, cinematographer Fred L. Jackman, and editor William Ziegler.