The second part of the film is devoted to oprichnina. When Ivan Vassilevich returned from Alexandrov Sloboda the boyars together with the King of Poland Sigizmund laid a plot. Prince Kurbsky, his intimate, defected to the Poles. The scenes of slaughter of the boyars and insubordinate metropolit Philip Kolychev alternate with Ivan’s the Terrible reminiscences of his childhood. The tzar is surrounded by his oprichniks headed by Malyuta Scuratov. Ivan the Terrible revenges Efrosinya Staritskaya, a boyar, killing her son Vladimir who claimed the throne.
Source : www.mosfilm.ru