A little boy named Tommy watches as his father is arrested after a brawl. Tommy believes his father must have killed someone and rather than return home, he heads to Tower Bridge to set up home there.

Having been given enforced retirement due to his age, Mick-Mack creates strain upon his extended family.

Mother Riley takes over a circus on the point of closing down, and makes it a success.

An American movie company wants to shoot a science-fiction film using a British army barracks as a location, and its soldiers as actors.