Old Mother Riley does the laundry for the dancers in the pantomime "Aladdin", where her daughter Kitty works as a chorus girl. Sneaking a peek at the show one day, Mother Riley accidentally pops up through a trap door onto the stage. Accosted by the angry star, Mother Riley’s belligerent responses have the audience in stitches. Outraged, the star walks out, leaving Kitty to take over the leading role, to great success.

James Martin and Carol Wall have plans to elope, but a fight with her father's solicitor ends in murder committed by an unknown third-party, and Martin is hunted for the crime, knowing the solicitor was alive when he left him. Carol refuses to speak to him, and he escapes on a ship to South Africa. There, he is the victim of an accident that disfigures his face, and he returns to England to clear his name, believing he won't be recognized. Other than by everybody who knew him, it turns out.

Lilian has an illegitimate war-baby which is then adopted by a wealthy spinster.

A highly respected clergyman is actually a former pirate who exacts vigilante justice in this British production.