What is the Plot for a fathers promise?

"A Father's Promise" is a historical fiction novel by Donna Lynn Hess that follows the story of Rudi Kaplan, a young Jewish boy living in Poland during World War II. When his father is taken by the Nazis, Rudi faces numerous challenges as he tries to survive and keep his promise to his father to stay strong and courageous. The novel highlights themes of family, resilience, and the power of promises in the face of adversity.