About the book: 2008 / It’s cool to go out on the tatami and defeat your opponent in a fair fight! Especially at the first European Championship in your life! Murka and Kisonka had been preparing for a karate competition for a long time... But not for an insidious and sudden attack by unknown people. The black-clad “ninjas” are doing everything they can to stop the twins from participating in the championship. Fortunately, Murka and Kisonka are not just athletes, they are employees and co-owners of the White Goose detective agency. Girls are as good at unraveling conspiracies as they are at winning sparrings.!