The film follows a number of people in an apartment building during a night full of dramatic events and entanglements.
Ingrid Eriksson, a social worker, decides to find out something about the problems facing housemaids and gets herself a job as one at the home of John Willman's family. John's son, Åke, falls in love with her and numerous complications arise before the course of true love runs smoothly.
Ulla thinks her husband Billy is boring and starts dating other men. Lillans husband Peter is having important meetings, including girls. Billy and Lillan decides to pretend to be in love, to rouse jealousy of Ulla and Peter.
