The book presents two action-packed novels, the main character of which is a private detective Igor Gladyshev. In the first of them - "Gop-stop in Spanish" - while on vacation in the Spanish town of Susanna Cruz, he meets several Russian tourists and goes on an excursion with them to the famous Adelita Cave. As soon as they descend into the dungeon, a monstrous explosion thunders. The guide dies, and the cave partially collapses.