The children leaving the school are all very excited.

There is a birthday party, but someone is not invited . . .

What will happen when the enormous whale with the tiny hat appears?

This title is also available in Spanish as No me invitaron al cumpleaños.

Susanna Isern works as a child psychologist and writer. Most of her books have been translated into over a dozen languages. She has been awarded the Silver Medal in the Moonbeam Children's Book Awards 2013 in the United States.

Adolfo Serra has won many awards, and including being selected for the Bologna Book Fair, the fourth Ibero-American Catalog of Illustration, and the fourh CJ Picture Book Awards. He was also selected for the Fondo de Cultura Award in Mexico.