A remote research station sends a frantic distress call. When help arrives, they find every living thing for fifty square miles dead. To halt the blight, Sigma must unravel a threat that rises out of the distant past, to a time when Antarctica was green. Following clues from the lost Library of Alexandria and a map showing millennia-old secrets buried in the darkest jungles, Sigma will face its greatest challenge yet: stopping the extinction of mankind.