King Froilán orders the construction of a great wall. He seeks to protect his kingdom from others, those strangers who awaken so much fear. But it is never enough and the wall grows without stopping. What will happen when there is no one left on the inside but the king? Only an intrepid princess will be able to find the answer.

Winner of the El Barco de Vapor Award, 2009.

Other editions

• Loqueleo Editions, Buenos Aires, 2025 (Ilustrations, Rosario Oliva).