Moscow city. Hall of the Moscow Variety Theater. Chess match for the world championship between the world chess champion M. Botvinnik and the challenger T. Petrosyan. Moments of the game. The panel of judges. Chief Arbiter G. Stahlberg (Sweden). Grandmasters A. Lilienthal, D. Bronstein, ex-champions M. Euwe, M. Tal analyze and analyze the games being played. Yerevan city; repository of ancient manuscripts Matenadaran; 12th century book with a record of a chess game. Actors of the A. Spendiarov Armenian State Academic Opera and Ballet Theater play chess backstage during the intermission. People on the streets of Yerevan at the chessboard are taking apart the chess game of M. Botvinnik - T. Petrosyan. Interview with weightlifter Y. Vlasov, artist N. Zhukov, A. Raikin about chess. M. Botvinnik and T. Petrosyan finish the last game. T. Petrosyan is congratulated on the victory. G. Stahlberg and Vice-President of the International Chess Federation Rodionov are wearing a laurel wreath on T. Petrosyan.