Immersed into dark and unexplored ancient woods a group of expeditioners led by your uncle Eneko, a distinguished professor of science, together with a Hindu millionaire philanthropist go deep in search of an old, almost forgotten legend.
According to some aboriginal records, thousands of years ago, when mankind had not even stepped on earth there existed a forbidden city that no language dared to name.
As Santiago Farrell, anthropologist from The National Museum of Buenos Aires you will be called to take part of the expedition. But not everything results as planned and you will soon discover that the place keeps a never revealed horrifying secret.