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

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, rough-and-tumble street urchin Gillie witnesses the brutal killing of a young woman at the hands of visiting Polish sailor Korchinsky. Instead of reporting the crime to the authorities, Gillie merely pockets a prize for herself — Korchinsky's shiny black revolver — and flees the scene. When Detective Graham discovers that Gillie has the murder weapon, the fiery young girl weaves a web of lies to throw him off course.