Keith Livingston becomes a participant in the search for the Map on the Skin. However, the evil Count Burley and his bandits are also looking for the Map. Parts of the Map are scattered across a variety of places and times, and not only this reality. Moreover, no one knows what the symbols of the Map mean. Mina, having established herself in seventeenth-century Prague, gradually becomes an experienced ley traveler. However, she also faces enemies looking for the Map. Lei travelers move through time and space - from Ancient Egypt, the kingdom of the mysterious Etruscans and even the Stone Age, where the strange Bone House appears.