At the end of the centuries - and still today - walls, barriers, borders have been erected with the aim of separating and excluding peoples, ethnic groups, cultures and religious faiths. The history of civilization teaches us, however, that progress can only come from the meeting of communities, the exchange of ideas, knowledge and ways of life. The book entitled The Wall tells the story of a king who, once descended from his throne, realizes that his kingdom formerly inhabited only by Bleus now houses other colors. He then decides to return to the old days and to separate his people from "strangers", isolating them behind a wall. But he quickly realizes that each of his desires can only be satisfied with the help of the colors he has chased away. The king therefore ordered to tear down the wall and, recognizing the interest of integrating the populations, succeeded in establishing harmony within his kingdom. The Wall helps to spread a positive message and a strong emotional impact through a narrative whose brief sentences are accompanied by original illustrations. Inside, a "real" pop-up wall makes this book truly unique.