For Little Ones Who Can't Fall Asleep. Fairy Tale. Air Travel. The Upper Level. Happiness: FOR LITTLE ONES WHO CAN'T FALL ASLEEP. FAIRY TALE., #5

The grand finale of Diana and Berta's magical journey! On the highest level of the World of Air, our brave heroes face their most important challenge yet. Ancient secrets, unexpected allies, and the true meaning of happiness await in this heartwarming conclusion to the beloved series. Perfect for young readers ages 9–12 who love fantasy, friendship, and unforgettable adventures.