The sixties of the last century, the Caucasus, those places where, in forty years, the friendship of peoples will be replaced by a protracted war. Moscow journalist Vlad Gordin is forced to go for treatment to the Samshitovaya Roshcha tuberculosis sanatorium. The old-timers of the sanatorium and a newcomer as a joke found the order of Tubpliers. Members of the order are connected by the “invisible chain of Koch,” and only among equals, in their circle, can they finally think and love freely. Meanwhile, at the same time, the mountaineers unite with the Tubplers for a more serious conspiracy...