A team of trainees of the Institute of Experimental History, led by an instructor, the inimitable Sergei Lisichenko, nicknamed the Fox, having completed the task brilliantly, is preparing to return to their native Institute. Of course, the Paris of the ancient Franks is not at all what we imagine it to be today, but the courtiers intrigues and political games are already in full swing there. Events are unfolding so quickly that farewell to new friends has to be postponed indefinitely, because our heroes cannot leave their comrades without support, and their questions unanswered. You'll have to rack your brain—and perhaps not only your own—to figure out why the stone chimera came to life; how to reveal the secret of the medallion and expose an enemy saboteur; Is it possible to canonize a dragon? This time there will be a battle with an enemy who is reputed to be invincible, and even in the confusion of a military campaign, court conspirators are trying to seize power!