The picture book with short accompanying texts gives children a slightly different approach to letters and to learning to read. A short story tells about the relationships and friendships between letters. On the advice of the "word beetle", the letters defend themselves against a storm by joining together to form words and thus becoming strong. The "Sentence Caterpillar" shows them how they can represent "something of importance" by joining together to form meaningful sentences, a story that is ideal for introducing children step by step to the reading of individual letters, words and sentences. The merging of letters into words and words into sentences is packed into an exciting story. Children learn the meaning of reading and writing and discover that building words can also be fun.