A Depression-downtrodden waif uses her brains instead of her body to rise from tyro con artist to crime boss.

A detective poses as a jewel thief and joins a bunch of other crooks sailing from Europe to New York in search a famous gem. He falls in love with one of the crooks.

As a luxurious ocean liner makes its way across the Atlantic Ocean, the audience is made privy to the travails of several of its passengers. Edmund Lowe heads the cast as Monty Greer, a suave gambler who falls in love with Judy, the daughter of immigrant lens grinder Rudolph Kramer. In trying to recover some valuable securities stolen from banker Henry Graham, Greer finds himself in the middle of a fierce gun battle in the ship's engine room. Meanwhile, Graham, who has been cheating on his wife Kay with sexy dancer Sigrid Carline, is murdered by person or persons unknown.

Among the travelers of varied backgrounds that meet and interact on one night at Union Depot, a metropolitan train station, are Chick and his friend Scrap Iron, both newly released from prison after serving time for vagrancy. Hungry and desperate for a break, Chick fortuitously comes across across a valise abandoned by a drunken traveler. In it he finds a shaving kit and a suit of clothes with a bankroll, which help transform the affable tramp into a dashing gent. After buying himself a meal, Chick seeks some female companionship among the many hustlers who walk the station. He propositions Ruth Collins, a stranded, out-of-work showgirl and takes her to the station's hotel.

A farmer's widow takes on the land and her late husband's tempestuous son.

Nightclub singer Alice Carroll is found in the office of club owner Al Barrow, who is lying dead on the floor. Alice has been overheard threatening to kill Barrow rather than give in to his advances. She protests her innocence, but the District Attorney doesn't believe her and charges her with Barrow's murder. However, things aren't quite as cut-and-dried as the D.A. believes them to be.

The story about a man framed for a crime he didn't commit, who returns to wreak havoc following his release from prison.

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