When a young girl is placed under hypnotism, it's discovered that she has a split personality.

Russian brothers Count Boris and Alexis Rabourdin obtain a Japanese coastline defense map and plan to sell it to German agents in London. In America, Alexis schemes to marry wealthy Eve Bertram, who loves him. Boris, meanwhile, falls in love with Christine Lesley, Eve's neighbor whom Eve's brother Guy, an amateur inventor experimenting with explosives, also loves.

Two young clerks in a department store meet and fall in love during a seaside vacation in Maine, but part as strangers because, unknown to each other, both had been masquerading as upper-class 'swells', just to see how the better half lives.

Two playboys stumble drunkenly home, where the owner falls asleep and the other attacks the maid. The butler intervenes and a fight results in the death of the assailant. A French girl, escaping from a pimp who kidnapped her, witnesses the crime. The butler convinces his master he is the killer, and must flee. He joins the girl but is caught. She helps police expose the real killer by going undercover as another maid.

In Montegro brothers Stefan and Michael kidnap American heiress Delight Warren. Stefan marries her so he can claim her wealth, but then they fall in love.

A young New York society man makes a bet that he can rob a house and get away without being caught by the police. Things turn out to be not as easy as they seem.

"Mr. Grex of Monte Carlo" is an interesting play of intrigue between the Grand Duke Augustus Peter of Russia, whose incognito is Mr. Grex, an English Secret Service agent, Lord Huntersley and a young American millionaire on pleasure bent, Richard Lane. Mr. Grex and two other diplomats who unofficially represent France and Germany, plan to meet as if by chance in Monte Carlo for the purpose of arranging a secret pact.

A slave switches her light-skinned baby with her master's baby. The child grows up raised by whites.