The film was shot and originally released in 1972 with the title Mad Trapper of the Yukon; it was re-released in 1975 as Challenge to Be Free.
When he is confronted by rival trappers over his interference with their trap lines, they bring along Sargent, the local police officer.
Feeling intimidated, Trapper fights back, shooting his way out of his cabin and embarking on a desperate attempt to escape the authorities.
Challenge to Be Free was filmed mainly on location in Alaska, as the locale of the "Mad Trapper" manhunt was changed from the Yukon to the United States.
Reviewer Leonard Maltin characterized Challenge to Be Free as being "... A very charming film, wonderful for younger viewers.