Easy come, easy go!

Ding-dong! When the parcel delivery man rings Karl-Heinz's and Bisy's doorbell, the cross spider and the house fly are faced with a riddle. Because the package contains a round something. An egg! Whether they like it or not, the new addition to the family is about to arrive. And the adopted daughter brings a lot of momentum into the family network - but can this go well in the long run? The fourth volume based on the bestseller "Du spinnst wohl!