Humanity is in danger. Professor Spinelli is on the hunt for Galileo's missing book, in which the famous astrologer supposedly theorized a link between epidemics and meteorites. When Spinelli goes missing, it is up to his assistant, Alessandro Vinci, and microbiologist Rebecca De Cardinale to follow the clues. But their hunt soon takes a dangerous turn, and the two find themselves in a deadly race against time to find the missing book and save humanity from catastrophe.