Can riddles stop an asteroid?

Vladimir Tumanov, known for his fantastic novels encouraging children to love mathematics and geography , invites his readers to a breathless adventure in the third book of the "Mysterious Maps" series. This time, the Alt Brothers and Mariana must cross the oceans to escape an approaching asteroid, while solving new riddles to stop it. While making us think about the issues that will determine the future of the world such as space, consumption and asylum, the novel emphasizes scientific thinking and research, and blends the eternal struggle of good and evil with dangerous discoveries.

Plot

Going to Mr. Chagrin's shop with the Alt Brothers, Mariana accidentally opens the fire scroll which turns out to be a map of the solar system. The scroll reveals that an asteroid called Brimstone 13 will crash into North America if new riddles are not solved. Millions of people begin to be evacuated by ships. Separated from their families as a result of mishaps, the children try to find the answers on a huge ship bound for Australia. Thanks to Ava, who rescues the three children from an island where they are marooned, they encounter the breathtaking natural world of Australia and struggle on...