Das Geheime Zimmer plot
14-year-old Anna-Lena accompanies her father Friedrich to her grandmother's funeral, which takes place in a small town in the Ruhr region. The girl is in a bad mood because her father wants to spend time there with his childhood sweetheart Ulrike and her son Lutz. But Lutz and Anna-Lena are befriended and transported back to the wartime 1940s when they discover a secret room in Grandma's house where someone apparently was hidden during World War II. But who was this person? And what does Lutz's grandfather know about this case? As Anna-Lena and Lutz try to figure this out, they learn their first lessons about love, jealousy and true friendship.