Rocky IV is a 1985 boxing film, the fourth an most financially successful movie of the Rocky franchise.Rocky Balboa (played again by Sylvester Stallone), plans to retire from boxing after regaining his title from Clubber Lang in Rocky III. An unknown amateur boxer from the Soviet Union, Ivan Drago (played by Dolph Lundgren), however, makes a bid to enter the US boxing ranks. After an exhibition match goes horribly wrong, Rocky must step in and challenge the Russian boxer himself to avenge his friend.