When his master is attacked and left speechless, Ranger is held responsible. On the lam from the Law, the canine hero links up with telegrapher Bill Brady and Bill's girlfriend Helen Meadows. He gets a chance to clear his name by helping Bill trap a pair of outlaws who plan to blow up a mail train and abscond with the loot.
Ranger the Dog
as Ranger
Helen Foster
as Helen Meadows
Rex Lease
as Bill Brady
Alfred Allen
as Henry Jordan
Harry Tenbrook
as Mike
Bruce Gordon
as Ed
Spencer Bell
as 'Snowball' Black
Victor Allen
as Sheriff
