A young singer's chance at fame is threatened by his hoodlum pals.

To make an honest woman of his pregnant sister, Rosalie, callous New York mobster Phil Regal intimidates witnesses and bribes a store clerk to get Rosalie’s condemned boyfriend, Nicky Bradna, out of prison. But Regal’s meddling deeds soon backfire.

A scientist develops a formula which will cause animals to regress to the form of their primitive ancestors, and tries it on himself with disastrous results.

Police Officer Flanagan gives a little blind girl, Billie, a Raggety-Ann doll, and she is told she can see it if she uses her imagination; she does so and the slum neighborhood is transformed into an enchanted fairyland, alive with beautiful colors and music.