A woman who refuses to become involved with a dedicated police officer unknowingly dates a man who is in cahoots with a criminal mastermind.

The tough outlaw 'Sierra' Bill falls in love with the traveling girl violinist Nelly Gray. Sierra forces her into marrying him. They have a child, but family life is interrupted by the gambler Ringe, who not only persuades Nelly to leave her husband but ruins Sierra at the gaming table. With thoughts of vengeance, the angry Sierra breaks out of jail and goes after Ringe.

Promising young lawyer Jack Dunn,, becomes a victim of drugs and loses his standing in the legal world. He passes his idle hours in the slums where he meets Nan Bishop, an underworld figure. Nan's influence helps to make a man out of Dunn and with her help he breaks his dependence on drugs and is successful in obtaining a position as a criminal lawyer. Years later, they meet again in a courtroom. Nan has been falsely accused of murder and Dunn is the prosecuting attorney. Learning that Dunn's professional future depends on his winning the case, Nan pleads guilty, but, at the last minute, the real criminal is discovered and Nan is cleared of the crime. She then accepts Dunn's offer of marriage and together they look forward to a happy future.

Square Deal Sanderson is in pursuit of a horse thief, but someone else shoots the varmint before Sanderson can offer him a "square deal."

The Hollywood Post's sports writer, Jimmy Jones (Charles Quigley), yearns to be a crime reporter, and thus looks for foul play on even the most routine assignments. In writing a piece about a girl's softball team, Jimmy discovers that their sponsor, Foy Harris (John Gallaudet), is a notorious racketeer who has supposedly gone straight. Jimmy suspects Foy is still up to no good. He begins hanging around the team to do a bit of snooping, and also to be near the cute new pitcher, Ann Casey (Jacqueline Wells).

Former crook 'Square' Kelly serves in the First World War. When he returns from the war, one of his comrades-in-arms convinces him to join the police force. But Kelly finds himself confronting the very criminals who made up his old gang.