One day, the relatives of the late grandfather find out that before his death he wrote a will. Since grandfather was a traveler, in order to receive an inheritance, he attached a riddle – a map of the world that must be guessed "from head to toe, completely" in order to receive an inheritance. In search of an answer to this strange riddle, the six heirs decide to visit the traveler's country house, but the house turns out to be a trap for them.