This book is an emotional, educational, and inspiring journey consisting of 19 adventures that shape children's ecological awareness. It leads the reader from the first expedition to the creation of the Book of Nature and the discovery of the planet's true treasure — knowledge, unity, and love for life.The main characters are children who explore the forest as a living system, study the forests of the world and their inhabitants, see two possible futures — harmony and loss, and leave a message for future generations.