The Fuller Brush Girl

Sally is a switchboard operator at a steamship company and works with her boyfriend Humphrey. They plan to marry and dream of buying a house. Their steady jobs and future prospects set the stage for the couple’s ambitions.

Sally persuades her boss, Harvey Simpson, to consider Humphrey for the job after he fires the cargo supervisor. To Humphrey's surprise, Simpson hires him on the spot. The promotion promises higher income and a step toward their house goal.

With Humphrey's promotion, the couple can place a down payment on the house they've long wanted. The prospect of financial security reinforces their marriage plans. The new income marks a turning point in their ambitions.

Sally, chatting with a friend who works for Fuller Brush, accidentally destroys the switchboard and coats Simpson in Fuller Brush powder. The incident leads to her being fired from the company. This setback forces Sally to rethink her future and consider entrepreneurship.

Sally decides to pursue her own Fuller Brush franchise, but she needs a reference from her former employer. She borrows her friend's sales kit to demonstrate she can be a successful salesperson. The plan hinges on obtaining that elusive reference.

Simpson's wife Claire senses the powder on her husband and accuses him of infidelity. Simpson asks Humphrey to have Sally attest to his version of events. Sally's position becomes precarious as marital tensions escalate.

A woman claiming to be Sally enters the Simpson home and kills Claire. When Sally arrives, the intruder knocks her unconscious. Humphrey rescues Sally, but she awakens believing Claire was the killer and becomes the prime suspect.

Sally spots an advertisement for a burlesque show featuring a dancer she recognizes as Ruby Rawlings. She suspects Ruby's involvement in the earlier assault and the smuggling scheme. The pursuit of Ruby becomes the next course of action.

Humphrey crosses paths with a gunman at the steamship company office, who shoots at him and misses. The killer has already murdered Simpson, linking the crime to the larger criminal plot. The crime confirms that Sally and Humphrey are entangled in danger.

Sally finds a photo of Simpson's wife on his desk and realizes it wasn't the wife who betrayed her, but Ruby. The revelation shifts the investigation toward Ruby and ties the burlesque dancer to the smuggling operation. This discovery motivates their chase.

Sally and Humphrey pursue Ruby to her theater, where Sally disguises herself as a dancer and is forced onto the stage. The disguise allows them to watch Ruby more closely. The pursuit intensifies as clues close in on the smuggling operation.

They follow Ruby onto a departing ocean liner, and Humphrey learns he has been an unwitting participant in the smuggling scheme. The ship becomes the new arena for their pursuit. The danger heightens as they navigate the bustling corridors of the liner.

Criminals chase them around the ship, and the couple leaps out a porthole into the hold. They hide in rooms filled with leaky wine barrels, bananas, and a pair of parrots that nearly reveal their location. The tension builds as the criminals search for them.

The main container of the smuggled merchandise is booby-trapped with explosives. Sally unknowingly threatens the container, causing the criminals to panic and jump overboard. The explosion draws harbor police to the scene and heightens the sense of danger.

In an embrace, Sally and Humphrey barely notice the explosion as they escape the danger together. The couple's relationship survives the peril and their future remains hopeful, even as the mystery resolves around them.