Tom Gallery

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.

Bob Wilson, who becomes a tramp after being jilted by his fiancee, prevents the Limited Mail from being wrecked during a mountain storm and becomes fast friends with Jim Fowler, a railway mail clerk. Jim gets Bob a job on the railroad, and Bob works himself up to the position of engineer on the Limited. Both of the men fall in love with Caroline Dale, but she prefers Bob. A runaway freight runs into the Limited, and Jim is killed. Bob becomes a tramp again, making pals with an ex-convict.