In a fictional story, in which real characters are brought to life, the author presents an absolutely novel vision of events that, until now, were not considered as related. The events are intertwined until they lead to an unexpected ending that will catch both lovers of Patagonia and followers of the so-called Father of Evolution. Gerardo Bartolomé meticulously studied the actions of dozens of characters in those memorable pages in the history of Patagonian exploration, achieving a scenario in which what is not proven historical truth is, at least, completely possible of having occured.