Ronald Whelan

George is a disaster-prone zoo attendant who accidentally discovers a substance that accelerates motion, enabling his greyhound to run faster. This attracts the interest of a gang of criminals, who kidnap George's dog and plan to substitute their own in an important dog race. George and his friends defeat the crooks and their dog wins the race.

A young forestry graduate, Jim Thornton, is involved in a race between timber companies to fill a major contract. Jim has joined the crew of a genial timber baron, Burbridge, and foils attempts by a rival, Blake, to sabotage their work. J. Alan Kenyon's special effects are the highlights of the film with comic relief provided by Joe Valli as a Scottish timber-train driver amorously pursued by a shrill-voiced maid of the Burbridge's country house.