Like most of Kermit Maynard's "northerns" for Ambassador Films, Timber War is ostensibly based on a story by James Oliver Curwood. Maynard is cast as Jim Dolan, a two-fisted young man forced by circumstance to impersonate weak-willed playboy Larry Keene (Lawrence Gray), scion of a powerful lumber family. In this guise, Dolan saves Keene's relatives from the sinister machinations of timber-baron Murdock (Wheeler Oakman). Along the way, he also rehabilitates the wastrelly Keene, who proves to have more backbone than previously suspected. Most of the lumberjack sequences in Timber War were lifted from stock footage, but the thrilling climax is all "new," and all Kermit Maynard.