Our doggy hero is abandoned in the desert while in pup-hood. Upon reaching maturity, Tin Tin has undeservedly earned the reputation as a killer canine. Thus, the human characters spend most of their time hunting down the dog in hopes of collecting a huge bounty.
During World War I, Rin-Tin-Tin finds that he must rescue his master, a fighter pilot, from his wrecked aircraft. He also has to help him escape his rival, who has ordered him shot so he can have the girl they're competing for all to himself.
Paul Andrews returns from the World War with Buddy, a dog he found in Europe. Instead of getting a warm welcome, he finds his sweetheart, Caroline Blair, missing.
Ben Darby and Pancake, his father, are owners of a mining claim in Northwest Canada. Ben goes to war, leaving Pancake to run the mine. During Ben's absence three claim jumpers take possession of the mine: one of the men is the father of Beatrice, Ben's sweetheart; another, a rival suitor. Pancake...
Tom's father, Barry, lives at a lonely trading post up north and is constantly in fear the post's factor, who has threatened to turn him in to the Mounted Police for a murder committed many years before.
