Charly Graf's life story is fit for Hollywood: A dark-skinned boy from a housing project in Mannheim rises to become a celebrated star in the German boxing scene. But with success come false friends. He slips into a criminal environment and ends up in prison. Charly Graf has long freed himself from the vicious cycle of violence and has become a role model for difficult-to-reach youth. In schools in socially disadvantaged areas, he teaches them boxing and shows them how to manage their aggression and develop more self-confidence. His unconventional teaching methods resonate with the young people because he is one of them.