A rebellious youth, sentenced to a boy’s reformatory for robbing a bakery, rises through the ranks of the institution by impressing its Governor through his prowess as a long distance runner. He is encouraged to compete in an upcoming race, but faces ridicule from his peers.

In Tiger Bay, the docklands of Cardiff, street urchin Gillie witnesses the brutal murder of a young woman. Instead of reporting the crime, she merely pockets a prize for herself — the perpetrator's shiny black revolver — and flees. When Detective Graham discovers that Gillie has the murder weapon, the fiery young girl weaves a web of lies to throw him off course.

A neglected girl in post-World War II London befriends street urchins who help her build a tiny garden in a bombed-out church.