Koko le petit moineau est en partance pour la Bulgarie. Là-bas un chat attend le ventre vide, il voit Koko sortir de l'avion et il pense que c'est un beau cadeau qui lui tombe devant le nez. Ce chat est un chat de mauvais augure lui confia Pollux un gentil petit chien qui va devenir son meilleur ami. Koko va découvrir ce pays mais il devra affronter bien des dangers.

Paul jeune aventurier revient au pays. Ses parents ne veulent pas le voir repartir. Mais comment faire pour le garder près d'eux.

Koko the little sparrow was at the airport. He perched on top of a large pile of suitcases, and was thrown in the middle of the luggage about to leave for Bulgaria. When he arrived there, a cat was waiting with a ampty stomach. This cat is an ominous cat who puts a spell on birds said a lovely dog.

Koko is a cute little bird. He lives in Paris on a tree near the Eiffel Tower. Baloo is a big bad dog. He looks up at the tree and sees this little sparrow. He thinks he can swallow him for his breakfast. Every day Mrs. Brown brings bread to Koko who must be very brave to face the danger with this big bad dog who looks up at him and shows his big teeth.