George enlists in the police force and is assigned to Harmony Row, a haunt of criminals such as Slogger Lee.

After being fired from his job at a grocer, George, gets a job as a stableboy at a local stud farm run by the Fleming family. He befriends the horse Hotspur who is a favourite to win the Melbourne Cup, and develops a strong whistle which is used to make the horse run fast.

The plot concerns a man, Joe Blake, who works as a stage hand in a vaudeville theatre headlined by Mysto the magician. When he finds out that the girl he is in love with, Molly, is getting married, he gets drunk with his friend Happy Morgan and decides to commit suicide.

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.

His Royal Highness is a 1932 Australian musical film directed by F.W. Thring, also known as His Loyal Highness (Australia alternative title and title in the United Kingdom), starring George Wallace in his feature film debut.

A man goes drinking with his friend and goes home to his wife.