The adventures of the inseparable six friends from Croix-Rousse and their faithful dog Kafi, beloved by young readers, continue! The company decides to spend their holidays in Spain. But a number of incidents happen at the border that change their plans. A mysterious object of unknown purpose found by the guys becomes the beginning of a complex investigation that leads to the most unexpected results... Who would have thought that an ordinary ball that knocked out the glass of an abandoned basement could lead to The owner is in such terrible trouble! It’s good that six friends from Croix-Rousse are always ready to help someone who needs it. It turns out that in the old basement there is some kind of mysterious life, the course of which was disrupted. The publication includes two stories - “The Secret of the Man in the Glove " and "The Mystery of the Flying Brigade."