A gang of blackmailers sends a cripple to San Francisco to expose a banker they have been blackmailing. However, the cripple meets and falls in love with the banker's daughter.

The daughter of a struggling musician forms a symphony orchestra made up of his unemployed friends and through persistence, charm and a few misunderstandings, is able to get Leopold Stokowski to lead them in a concert that leads to a radio contract.

An actress hopes to regain her lost son by making it to the top.

A woman murders her husband's mistress and someone else gets accused of the crime.

Betrayal and espionage abound as an experimental aircraft is readied for its maiden voyage.