Karim is on a secret mission for his tribe. He is to take revenge for his murdered brother. However, an encounter in the desert changes everything and leads the black rider to the manger in Bethlehem. Karim realizes that peace, not revenge and war, must be the most important of all laws. He immediately sets out to proclaim the message of the child. Ursel Scheffler tells the well-known Bible story of the birth of Jesus from a new perspective. The vivid parable about Karim's transformation invites third and fourth graders to engage with peaceful coexistence in a community and fosters their understanding of foreign cultures and beliefs.