In the spring of 2022, security guards in Moscow are tense. Under the guise of a film competition on the architecture of the city, Yana Osman and Anton Khamchishkin are permitted, if nothing else, to film the battlements of the Kremlin wall. But how to speak of the attack when you have to say “special military operation”? How to create pictures of resistance when filming any protest is forbidden? By pondering swallows and mathematical catastrophe theory, for example.