The film is based on an original screenplay by Mika Waltari, revolving around a young woman who transforms the lives of three bachelors upon arriving at their home.

[3] The project was offered to Ikonen by T. J. Särkkä, but she initially doubted her abilities, fearing male actors might not accept a female director.

[3] Baron Heimonheimo (Ture Junttu) demands that his fiancée, Kirsti Kalpa (Ansa Ikonen), abandon her singing career.

A suspicious police officer notices Kirsti loitering in a park, prompting her to flee into a house occupied by three bachelors: a professor, his servant Kalle, and a composer named Rantamaa.

Introducing herself as a country girl who mistakenly entered the house, Kirsti manages to stay as a maid, despite the men's initial reluctance to allow women into their home.