What is the main conflict in The Dark Room by Rachel Seiffert?

The Dark Room, a set of three stories chronicling the events before, during, and after World War II in Germany, follows three characters in their journeys of self-discovery and acceptance. From Helmut, a physically disabled young man unable to join the war effort, to Lore, a young teenager responsible for assisting her four younger siblings in their escape to Hamburg, to Micha, a schoolteacher who discovers his grandfather's past as an SS man in the German military, these characters embark on harrowing journeys which test the foundations of all they know and love. The Dark Room draws a complete image of Germany's involvement in World War II and illustrates the lingering effects of that war on the countries youngest generations.