A homeless girl is asked to explain her bad behaviour in the juvenile court, and says she’s run away from home because she’s unhappy there.

The film opens with Miss Thorpe, chairwoman of the Juvenile Court, giving advice to troubled teenager Lyla Lawrence.

There she meets Jimmy Rosso, a sharply-dressed man who immediately takes a liking to her good looks, telling her he could get her a job at the club where he works.

Jimmy tells her to go to the Blue Angel night club, where she meets his employer Max Vine, the boss.

Red lets her have a bath and allows her a night's stay but insists that she leave the following day when they will search for new lodgings for her.

When watching the movie, the name of the night club is articulated as being something similar sounding to Swan's Down, rather than Blue Angel.

Believing Jimmy's lies and discounting Red's evidence that Gwen is innocent, Miss Thorpe, presiding over the hearing, decides to send her to an approved school for three years.

[4] Trade papers called the film a "notable box office attraction" in British cinemas in 1948.

[5] The New York Times concluded that "even the commendable acting in Good Time Girl does not bring it out of the minor melodrama class";[6] whereas The Monthly Film Bulletin found the film "Tensely gripping in its seamiest situations, it holds the interest to the end and makes the heart beat faster...Apart from perfect direction, fine photography, and good acting, the story makes one think and argue";[7] and in The Spectator, Virginia Graham wrote "Good Time Girl makes a shot at dealing seriously and honestly with the problem of juvenile delinquency, and it does not fall too short of the mark.

"[8] Financially, the film was not a great success with box office takings (£177,000 at 1953) slightly under its production costs of £180,000.