The concept of “officer's honor” is not an empty phrase for Lieutenant Colonel Burov, and as a result, he constantly walks on the edge. In his life, a lot of things with the prefix “happened”: service in the GRU, the zone, escape and the Cave of Spirits, through which Burov finds himself... in the past. France, 18th century. Finding himself at the center of political intrigues and conspiracies against Russia, the officer and patriot Burov cannot stay away from the events. Now he's just a Smilodon, as saber-tooth tigers were called. And also Prince Burov-Transdanubia, whose ancestors sat above the Rurikovichs, Khovanskys and Mstislavskys...