Bastián, after the surprising resolution of the challenge on the enigmatic signature of Columbus, is invited by the Think company to participate in the world conference on Leonardo da Vinci that the firm sponsors in Madrid. The initial objective is to discuss the meaning of the symbolic painting entitled: Portrait of Luca Pacioli and disciple. Luca Pacioli was a friar friend and mathematics teacher of Leonardo da Vinci at the court of Milan.

The final result of these conferences on Leonardo da Vinci will change history after the concatenation of discoveries that will be exhibited on that memorable day.