In the third part of the series, the bat Sandor travels with the boy Jendrik by plane from Romania back to Germany. Not only does Sandor cause turbulence! The excitement continues even after landing. To make matters worse, there is a new teacher at school, and Jendrik's parents present their son with a difficult choice. Fortunately, Jendrik has his loyal friend Sandor, the wise bat, who helps him make a good decision and knows that even adults sometimes need guidance when it comes to important life choices.