Handsome aerial footage highlights this rousing RKO adventure tale that combines a frozen-North survival drama with a romantic-triangle love story. Hard-bitten Col. Stockton (Harry Carey) trains young pilots for cargo flights, and forces W.R. "Stag" Cahill (Richard Dix) back into service to assist him. Stockton tries to drop his son Ken (Chester Morris) from the program, believing him unequal to the task, while tensions grow between Cahill and Ken when they both fall in love with Meg (Joan Fontaine). Everyone is put to the test when the plane with Cahill, Ken, and Meg crash lands and the trio are stranded in the icy Arctic, and Stockton and his trainees try to save them.