It's all about an anonymous little gray book originating from sexually advanced Paris. The book doesn't look like much, but shouldn't be judged by its cover. Wherever this book goes, something will happen. And for sure, this book goes around.
The celebrated actor George Bergmann has four divorces behind him. When his four former wives get the impression that he is cozying up to a very young actress, they feel that they must take action. However, this leads to various misunderstandings and complications, which partly involves the former wives' new men and partly the young girl's strict parents.
Poul Løwe is young, charming and rich - and his secretary Gretel is the same, except for the rich - and none of them are mutual blind to each other's characteristics, making it difficult for them to concentrate on the typewriter. There's just one difficult and embarrassing problem: Poul is married!