Desperately looking for polar bears

During a fun fair, Leo, an adopted child, abandoned at birth, gives his last five Euros bank note to consult a fortuneteller. She announces, he will find his mother by following the tracks of a polar bear. Disturbed by the revelation, in the biggest secret, Leo will try the adventure with his faithful friend Laura. A very nice novel full of modesty and tenderness about the question that all the adopted children ask themselves, just like Leo, when they realize that their daily mom is not their real mother.