What happens if you find magic glasses and look through them at a magical picture? Ask Olive about it. How? You don't know Olive?! She is eleven years old, she has no mathematical abilities, but she lives in a mysterious old house, knows how to find unusual objects and make unexpected acquaintances. What secrets do three huge cats guard? What are the houses in the picture afraid of? And how to pacify the raging portrait? Incredible adventures with an unpredictable ending await the fearless and curious readers of this book!