The third detective story from “Investigations of the private detective Maxim Omsky” takes place in Mexico, a country where there are more mysteries than answers. Pre-Columbian Mexico, the history of the Olmecs, Toltecs, Aztecs and Mayans is intertwined with the main detective story. On the eve of the New Year holidays, a large company holds a lottery draw. The lucky prize - a trip to Mexico - goes to Elsa Koskinen. The incomprehensible winnings and the strange events that followed indicate that the girl was lured to the Mexican coast on purpose. Who set up the suspicious winnings and what are these people trying to achieve? Maxim Omsky, who accidentally ended up in the same hotel as Elsa, understands the mysterious events.