Where was Kobak before he was born? What is the invisible string that binds him to his mother even when they are not together? Why does Kobak have to stay in kindergarten and when will they meet again? And what awaits him in this unknown place? Flipping through this lovely book and looking at the lovely pictures of Barbara Szepesi Szűcs, we can discuss everything. At the end of the story, playful tasks and pages to fill in help the little ones to become familiar with the idea, from now on they too go to kindergarten.