Emma (Line Kruse) is an eleven-year-old only child from a wealthy Danish family. Emma's parents seem more interested in their own interests than in her. One evening when Emma overhears her mother talking about how tragic it must be to have your child kidnapped, Emma decides to stage her own kidnapping. She soon meets Malthe, a kindhearted, child-like, naïve sewer cleaner who literally stumbles on to her. She convinces Malthe that she is a Russian princess whose family is being chased by Bolsheviks, so Malthe lets Emma stay with him in his very modest abode. After being "kidnapped" for a few days, Emma decides to return home. But, just as she is about to return, she overhears a couple of servants talking about how her parents don't seem to be very upset over her dilemma. She then returns to Malthe, and a close bond soon develops between Emma and Malthe. Meanwhile, the police are finally called and begin their investigation. Emma writes a ransom note for $2,000, and her father pays it. Emma uses the money to buy Malthe some new clothes and to treat him to a "Russian" feast at the Grand Hotel. Just as they are leaving the hotel, the police finally catch up with them. Malthe believes the police want to return Emma to the Bolsheviks so he flees with her into the sewers.