France, the end of the 18th century. Time is interesting, but vague: a revolution is brewing, books are being destroyed, hundreds of people are in prison. Don Hermogenes Molina, a brilliant Latin scholar and incomparable translator of Virgil, together with the retired commander Pedro Sarate goes to Paris - they need to find the first edition of Diderot and D'Alembert's Encyclopedia . But this is not easy, because the book has long been banned .. Mercenaries from all over the world hunt her down and are willing to do anything to get her. Friends should at all costs be the first to get to the cherished work and try not to die in such a dangerous adventure.