A unique lengthy filmic record of the life of the employees, suspects and convicts in one of the oldest Russian prisons Butyrka Prison Castle, which stores legends and secrets of many inmates including Emelyan Pugachyov, Felix Dzershinsky, Vladimir Mayakovsky, Alexander Solzhenitsyn, Natalia Sats, Vsevolod Meyerkhold, Sergey Korolyov, Andrey Tupolev and many others.