A German sociologist goes to Sweden to investigate whether the Swedish sin is myth or not. He stations himself in a student home for girls. His fiancée in Berlin fantasizes about the study, and to allay her worries she packs her bags and goes to find him, to convince him to come home.

A German sociologist goes to Sweden to investigate whether the Swedish sin is myth or not. He stations himself in a student home for girls. His fiancée in Berlin fantasizes about the study, and to allay her worries she packs her bags and goes to find him, to convince him to come home.