It is the year 2213. Fifteen-year-old Felix Taylor is the last person on Earth who can speak and read Latin. In a world where technology has defeated war, crime, poverty, and famine, and time travel exists as a distinct possibility, Felix's language skills and knowledge seem out of place and irrelevant. But are they? A mysterious plague has broken out. Scientists can't stop its advance, and humanity is suddenly poised on the brink of eradication. The only possible cure is Lupus Ridens, or Laughing Wolf, a flower once common in ancient Rome but extinct for more than 2,000 years. Felix must project back to Roman times circa 71 B.C. and retrieve the flower. But can he navigate through the dangers and challenges of the world of Spartacus, Pompey, and Cicero? And will he find the Laughing Wolf in time to save his family and everyone else from the Plague of Plagues?