A mysterious message and the black cat Montgomery, whom Paula rescues from a tricky situation, initially seem unrelated. However, Paula then meets Miss Bloom, who lives amidst questions. They stick to cabinets, get stuck in flower boxes, and even appear on toilet paper. Miss Bloom suffers from the question disease, and only Paula and her friend Luca can help her! The museums of Munich provide the backdrop for an exciting quest for answers that takes Paula and Luca to a real elephant cellar, an almost authentic mine, and a burned-out Munich subway. Paula and Luca embark on an adventurous time travel through the fascinating world of Munich's museums. And in the end, no questions remain unanswered. Following the Hellabrunn Zoo, which was central to the successful first volume, children's author Diana Hillebrand continues the story.