A girl and three teenagers get lost in a high jungle in the Andes. The area is uninhabited and they have to survive in a hostile and unknown environment. In the forest mist float myths and legends of beings called The Ancient Ones, and the girl manages to communicate with wild animals. The youngsters must face dangers due to jungle beasts, tropical storms and geological cataclysms, as well as to drug traffickers, Jaguar-Priests and other unknown entities and a sinister place called by the natives The Tangle, an area of the jungle so dense that the vegetation prevents sunlight from reaching the ground. To overcome these dangers, the teenagers use their energies and display powers that they did not know they possessed. A magical novel full of mysteries that will keep you on your toes until the end.