A funny story of a family with two adventurous boys, expecting the next sibling. The arrival of a new sibling in the family can be very challenging for a child - it means less attention from the parents, preparing for the arrival of a child and the emotional strain on the family. The reader can deal with his or her own forthcoming issues and emotions through the projection of the main protagonists. The main heroes, Maťko and Braňo, have a private "manly" group without girls and, moreover, wish to be the three Musketeers. Their view is, however, changing when the baby girl is born prematurely and must fight for her life. They suddenly realize that their sister is a fighter - a Musketeer. The book won the award as The Most Beautiful Children's Book of the Fall 2011.