Michel, a fourth-grade student, repeatedly witnesses some of his classmates harassing Arnold. Fearing he might become a victim himself, Michel joins the group. Fortunately, the teacher notices something is going on in the classroom and makes an unusual proposal to address the problem. This book is a standard work on the topic of "Violence at School." The story is by Renate Welsh, one of the most prominent German children's authors of our time. It is an empathetic, shocking, and solution-oriented narrative with a specific focus on teaching skills in an educational context. The book also includes a teaching module suitable for use in third and fourth grades of primary education.